* config.h.in (RE_ENABLE_I18N) [!GRUB_UTIL]: New define.
* grub-core/lib/posix_wrap/ctype.h (islower): Use grub_islower.
(isupper): Use grub_isupper.
(isascii): New inline function.
* grub-core/lib/posix_wrap/wchar.h: Replace dummy with real contents.
* grub-core/lib/posix_wrap/wctype.h: Likewise.
* grub-core/normal/charset.c (grub_utf8_process): New function.
(grub_utf8_to_utf16): Use grub_utf8_process.
(grub_encode_utf8_character): New function.
(grub_ucs4_to_utf8): Use grub_encode_utf8_character.
* include/grub/charset.h (grub_utf8_process): New declaration.
(grub_encode_utf8_character): Likewise.
* include/grub/misc.h (grub_islower): New inline function.
(grub_isupper): Likewise.
(grub_strchrsub): Moved down to fix the definitions.
* include/grub/misc.h (grub_isxdigit): New function.
* grub-core/video/colors.c (my_isxdigit): Removed. All users
switched to grub_isxdigit.
* grub-core/term/serial.c (grub_serial_find): Fix in case of port
number starting with a letter.
* Add gnulib files generated by gnulib-tool in build-aux, m4 and
grub-core/gnulib directories
* .bzignore: Add **/.deps and autogenerated gnulib files
* configure.ac: Assign auxiliary directory to build-aux, add invocation
of gnulib macros, add grub-core/gnulib/Makefile
* Makefile.am: Add gnulib directory in SUBDIRS (removing unnecessary .),
include m4 directory to aclocal.
* Makefile.util.def: Remove direct compilation of gnulib source files
and use the new grub-core/gnulib/libgnu.a.
* build-aux/config.rpath: move config.rpath from top directory to
build-aux
* conf/Makefile.common: Remove the macro _GL_UNUSED already defined
in gnulib headers
* conf/Makefile.extra-dist: Add m4/gnulib-cache.m4
* grub-core/Makefile.core.def: Remove unnecessary extra_dist
* grub-core/lib/posix_wrap/localcharset.h (locale_charset): Update
header.
* grub-core/lib/posix_wrap/langinfo.h (nl_langinfo): Return static
string.
