To mimic the old (pre-elflink) command-line interface behaviour let's
use getchar() instead of reading from stdin. This way, if the user
types a command on the serial console it will actually be executed.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>

Use "menu hiddenkey" together with "menu hidden" for a one-keystroke
action.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

Automatically reformat com32/libutil/include/xcrypt.h using Nindent.

Do this for all files except HDT, gPXE and externally maintained
libraries (zlib, tinyjpeg, libpng).

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Automatically reformat com32/libutil/include/sha1.h using Nindent.

Do this for all files except HDT, gPXE and externally maintained
libraries (zlib, tinyjpeg, libpng).

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Automatically reformat com32/libutil/include/md5.h using Nindent.

Do this for all files except HDT, gPXE and externally maintained
libraries (zlib, tinyjpeg, libpng).

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Automatically reformat com32/libutil/include/base64.h using Nindent.

Do this for all files except HDT, gPXE and externally maintained
libraries (zlib, tinyjpeg, libpng).

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Add a common header file, xcrypt.h, for the various extended crypt
routines (md5, sha256, sha512).