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, 0 insertions, 186 deletions

diff --git a/lib/curl_netrc.c b/lib/curl_netrc.c
deleted file mode 100644
index 10853d395..000000000
--- a/lib/curl_netrc.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/***************************************************************************
- *                                  _   _ ____  _
- *  Project                     ___| | | |  _ \| |
- *                             / __| | | | |_) | |
- *                            | (__| |_| |  _ <| |___
- *                             \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2012, 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 "curl_setup.h"
-
-#ifdef HAVE_PWD_H
-#include <pwd.h>
-#endif
-#ifdef __VMS
-#include <unixlib.h>
-#endif
-
-#include <curl/curl.h>
-#include "curl_netrc.h"
-
-#include "curl_strequal.h"
-#include "curl_strtok.h"
-#include "curl_memory.h"
-#include "curl_rawstr.h"
-
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
-
-/* The last #include file should be: */
-#include "curl_memdebug.h"
-
-/* Get user and password from .netrc when given a machine name */
-
-enum host_lookup_state {
-  NOTHING,
-  HOSTFOUND,    /* the 'machine' keyword was found */
-  HOSTVALID     /* this is "our" machine! */
-};
-
-/*
- * @unittest: 1304
- */
-int Curl_parsenetrc(const char *host,
-                    char *login,
-                    char *password,
-                    char *netrcfile)
-{
-  FILE *file;
-  int retcode=1;
-  int specific_login = (login[0] != 0);
-  char *home = NULL;
-  bool home_alloc = FALSE;
-  bool netrc_alloc = FALSE;
-  enum host_lookup_state state=NOTHING;
-
-  char state_login=0;      /* Found a login keyword */
-  char state_password=0;   /* Found a password keyword */
-  int state_our_login=FALSE;  /* With specific_login, found *our* login name */
-
-#define NETRC DOT_CHAR "netrc"
-
-  if(!netrcfile) {
-    home = curl_getenv("HOME"); /* portable environment reader */
-    if(home) {
-      home_alloc = TRUE;
-#if defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
-    }
-    else {
-      struct passwd *pw;
-      pw= getpwuid(geteuid());
-      if(pw) {
-#ifdef __VMS
-        home = decc_translate_vms(pw->pw_dir);
-#else
-        home = pw->pw_dir;
-#endif
-      }
-#endif
-    }
-
-    if(!home)
-      return -1;
-
-    netrcfile = curl_maprintf("%s%s%s", home, DIR_CHAR, NETRC);
-    if(!netrcfile) {
-      if(home_alloc)
-        free(home);
-      return -1;
-    }
-    netrc_alloc = TRUE;
-  }
-
-  file = fopen(netrcfile, "r");
-  if(file) {
-    char *tok;
-    char *tok_buf;
-    bool done=FALSE;
-    char netrcbuffer[256];
-    int  netrcbuffsize = (int)sizeof(netrcbuffer);
-
-    while(!done && fgets(netrcbuffer, netrcbuffsize, file)) {
-      tok=strtok_r(netrcbuffer, " \t\n", &tok_buf);
-      while(!done && tok) {
-
-        if(login[0] && password[0]) {
-          done=TRUE;
-          break;
-        }
-
-        switch(state) {
-        case NOTHING:
-          if(Curl_raw_equal("machine", tok)) {
-            /* the next tok is the machine name, this is in itself the
-               delimiter that starts the stuff entered for this machine,
-               after this we need to search for 'login' and
-               'password'. */
-            state=HOSTFOUND;
-          }
-          break;
-        case HOSTFOUND:
-          if(Curl_raw_equal(host, tok)) {
-            /* and yes, this is our host! */
-            state=HOSTVALID;
-            retcode=0; /* we did find our host */
-          }
-          else
-            /* not our host */
-            state=NOTHING;
-          break;
-        case HOSTVALID:
-          /* we are now parsing sub-keywords concerning "our" host */
-          if(state_login) {
-            if(specific_login) {
-              state_our_login = Curl_raw_equal(login, tok);
-            }
-            else {
-              strncpy(login, tok, LOGINSIZE-1);
-            }
-            state_login=0;
-          }
-          else if(state_password) {
-            if(state_our_login || !specific_login) {
-              strncpy(password, tok, PASSWORDSIZE-1);
-            }
-            state_password=0;
-          }
-          else if(Curl_raw_equal("login", tok))
-            state_login=1;
-          else if(Curl_raw_equal("password", tok))
-            state_password=1;
-          else if(Curl_raw_equal("machine", tok)) {
-            /* ok, there's machine here go => */
-            state = HOSTFOUND;
-            state_our_login = FALSE;
-          }
-          break;
-        } /* switch (state) */
-
-        tok = strtok_r(NULL, " \t\n", &tok_buf);
-      } /* while(tok) */
-    } /* while fgets() */
-
-    fclose(file);
-  }
-
-  if(home_alloc)
-    free(home);
-  if(netrc_alloc)
-    free(netrcfile);
-
-  return retcode;
-}