Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

  f871de0... build: make use of 76 lib/*.h renamed files
  ffd8e12... build: rename 76 lib/*.h files

This also reverts removal of redundant include guard (redundant thanks
to changes in above commits) done 2-12-2013, reverting 1 commit:

  c087374... curl_setup.h: remove redundant include guard

This also reverts renaming and usage of lib/*.c source files done
3-12-2013, reverting 3 commits:

  13606bb... build: make use of 93 lib/*.c renamed files
  5b6e792... build: rename 93 lib/*.c files
  7d83dff... build: commit 13606bbfde follow-up 1

Start of related discussion thread:

  http://curl.haxx.se/mail/lib-2013-01/0012.html

Asking for confirmation on pushing this revertion commit:

  http://curl.haxx.se/mail/lib-2013-01/0048.html

Confirmation summary:

  http://curl.haxx.se/mail/lib-2013-01/0079.html

NOTICE: The list of 2 files that have been modified by other
intermixed commits, while renamed, and also by at least one
of the 6 commits this one reverts follows below. These 2 files
will exhibit a hole in history unless git's '--follow' option
is used when viewing logs.

  lib/curl_imap.h
  lib/curl_smtp.h

1 files changed, 161 insertions, 0 deletions

diff --git a/lib/ftp.h b/lib/ftp.h
new file mode 100644
index 000000000..d359f28f3
--- /dev/null
+++ b/lib/ftp.h
@@ -0,0 +1,161 @@
+#ifndef HEADER_CURL_FTP_H
+#define HEADER_CURL_FTP_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "pingpong.h"
+
+#ifndef CURL_DISABLE_FTP
+extern const struct Curl_handler Curl_handler_ftp;
+
+#ifdef USE_SSL
+extern const struct Curl_handler Curl_handler_ftps;
+#endif
+
+CURLcode Curl_ftpsendf(struct connectdata *, const char *fmt, ...);
+CURLcode Curl_GetFTPResponse(ssize_t *nread, struct connectdata *conn,
+                             int *ftpcode);
+#endif /* CURL_DISABLE_FTP */
+
+/****************************************************************************
+ * FTP unique setup
+ ***************************************************************************/
+typedef enum {
+  FTP_STOP,    /* do nothing state, stops the state machine */
+  FTP_WAIT220, /* waiting for the initial 220 response immediately after
+                  a connect */
+  FTP_AUTH,
+  FTP_USER,
+  FTP_PASS,
+  FTP_ACCT,
+  FTP_PBSZ,
+  FTP_PROT,
+  FTP_CCC,
+  FTP_PWD,
+  FTP_SYST,
+  FTP_NAMEFMT,
+  FTP_QUOTE, /* waiting for a response to a command sent in a quote list */
+  FTP_RETR_PREQUOTE,
+  FTP_STOR_PREQUOTE,
+  FTP_POSTQUOTE,
+  FTP_CWD,  /* change dir */
+  FTP_MKD,  /* if the dir didn't exist */
+  FTP_MDTM, /* to figure out the datestamp */
+  FTP_TYPE, /* to set type when doing a head-like request */
+  FTP_LIST_TYPE, /* set type when about to do a dir list */
+  FTP_RETR_TYPE, /* set type when about to RETR a file */
+  FTP_STOR_TYPE, /* set type when about to STOR a file */
+  FTP_SIZE, /* get the remote file's size for head-like request */
+  FTP_RETR_SIZE, /* get the remote file's size for RETR */
+  FTP_STOR_SIZE, /* get the size for STOR */
+  FTP_REST, /* when used to check if the server supports it in head-like */
+  FTP_RETR_REST, /* when asking for "resume" in for RETR */
+  FTP_PORT, /* generic state for PORT, LPRT and EPRT, check count1 */
+  FTP_PRET, /* generic state for PRET RETR, PRET STOR and PRET LIST/NLST */
+  FTP_PASV, /* generic state for PASV and EPSV, check count1 */
+  FTP_LIST, /* generic state for LIST, NLST or a custom list command */
+  FTP_RETR,
+  FTP_STOR, /* generic state for STOR and APPE */
+  FTP_QUIT,
+  FTP_LAST  /* never used */
+} ftpstate;
+
+struct ftp_parselist_data; /* defined later in ftplistparser.c */
+
+struct ftp_wc_tmpdata {
+  struct ftp_parselist_data *parser;
+
+  struct {
+    curl_write_callback write_function;
+    FILE *file_descriptor;
+  } backup;
+};
+
+typedef enum {
+  FTPFILE_MULTICWD  = 1, /* as defined by RFC1738 */
+  FTPFILE_NOCWD     = 2, /* use SIZE / RETR / STOR on the full path */
+  FTPFILE_SINGLECWD = 3  /* make one CWD, then SIZE / RETR / STOR on the
+                            file */
+} curl_ftpfile;
+
+typedef enum {
+  FTPTRANSFER_BODY, /* yes do transfer a body */
+  FTPTRANSFER_INFO, /* do still go through to get info/headers */
+  FTPTRANSFER_NONE, /* don't get anything and don't get info */
+  FTPTRANSFER_LAST  /* end of list marker, never used */
+} curl_ftptransfer;
+
+/* This FTP struct is used in the SessionHandle. All FTP data that is
+   connection-oriented must be in FTP_conn to properly deal with the fact that
+   perhaps the SessionHandle is changed between the times the connection is
+   used. */
+struct FTP {
+  curl_off_t *bytecountp;
+  char *user;    /* user name string */
+  char *passwd;  /* password string */
+
+  /* transfer a file/body or not, done as a typedefed enum just to make
+     debuggers display the full symbol and not just the numerical value */
+  curl_ftptransfer transfer;
+  curl_off_t downloadsize;
+};
+
+
+/* ftp_conn is used for struct connection-oriented data in the connectdata
+   struct */
+struct ftp_conn {
+  struct pingpong pp;
+  char *entrypath; /* the PWD reply when we logged on */
+  char **dirs;   /* realloc()ed array for path components */
+  int dirdepth;  /* number of entries used in the 'dirs' array */
+  int diralloc;  /* number of entries allocated for the 'dirs' array */
+  char *file;    /* decoded file */
+  bool dont_check;  /* Set to TRUE to prevent the final (post-transfer)
+                       file size and 226/250 status check. It should still
+                       read the line, just ignore the result. */
+  bool ctl_valid;   /* Tells Curl_ftp_quit() whether or not to do anything. If
+                       the connection has timed out or been closed, this
+                       should be FALSE when it gets to Curl_ftp_quit() */
+  bool cwddone;     /* if it has been determined that the proper CWD combo
+                       already has been done */
+  bool cwdfail;     /* set TRUE if a CWD command fails, as then we must prevent
+                       caching the current directory */
+  bool wait_data_conn; /* this is set TRUE if data connection is waited */
+  char *prevpath;   /* conn->path from the previous transfer */
+  char transfertype; /* set by ftp_transfertype for use by Curl_client_write()a
+                        and others (A/I or zero) */
+  int count1; /* general purpose counter for the state machine */
+  int count2; /* general purpose counter for the state machine */
+  int count3; /* general purpose counter for the state machine */
+  ftpstate state; /* always use ftp.c:state() to change state! */
+  ftpstate state_saved; /* transfer type saved to be reloaded after
+                           data connection is established */
+  curl_off_t retr_size_saved; /* Size of retrieved file saved */
+  char * server_os;     /* The target server operating system. */
+  curl_off_t known_filesize; /* file size is different from -1, if wildcard
+                                LIST parsing was done and wc_statemach set
+                                it */
+};
+
+#define DEFAULT_ACCEPT_TIMEOUT   60000 /* milliseconds == one minute */
+
+#endif /* HEADER_CURL_FTP_H */