gettext: Update to version 0.26

gettext: Update to version 0.26

- Update from version 0.25 to 0.26
- Update of rootfile
- Changelog
    0.26
	Programming languages support:
	  * JavaScript:
	    - xgettext now parses regular expressions with character classes
	      correctly.
	  * C, C++, Python, JavaScript, EmacsLisp, librep, Go, Ruby, awk, D, Tcl,
	    Perl, PHP:
	    - xgettext's heuristic recognition of format strings has been improved:
	      strings like "100% complete" (with a space flag in a format directive)
	      are no longer flagged as format strings by default, unless they occur
	      in a context that requires a format string.  You can override this
	      heuristic by using a comment of the form /* xgettext: c-format */.
	  * Shell:
	    - The documentation now mentions two other approaches for
	      internationalizing messages with parameters in shell scripts.
	    - xgettext now recognizes format strings in the 'printf' command syntax.
	      They are marked as 'sh-printf-format' in POT and PO files.
	    - Two new programs 'printf_gettext' and 'printf_ngettext' are provided,
	      that do formatted output with a localized format string in a more
	      efficient way (without spawning a subshell).
	    - xgettext now recognizes the \c, \u, and \U escape sequences in dollar-
	      single-quoted strings $'...'.
	Improvements for maintainers:
	  * xgettext:
	    - When extracting a message with plural that is some format string,
	      xgettext now verifies that the msgid and msgid_plural are compatible
	      as format strings.  For most format string types, this still allows
	      omitting from msgid a placeholder that is used in msgid_plural.  But
	      when a placeholder is used in both msgid and msgid_plural, its type
	      must be the same in both.
	    - xgettext now suggests a refactoring when a translatable string
	      contains an URL or email address.
	Improvements for translators:
	  * msggrep:
	    - msggrep accepts two new options -W/--workflow-flags and -S/--sticky-flags
	      that allow to select only messages that have a specified flag.
	Bug fixes:
	  - The AM_GNU_GETTEXT macro now rejects the dysfunctional gettext() function
	    in libc of Solaris 11.[0-3], Solaris OpenIndiana, and Solaris OmniOS.
	  - The AM_GNU_GETTEXT macro now recognizes, on MSVC, the GNU libintl built
	    as a shared library.
    0.25.1
	Bug fixes:
	  - autopoint no longer fails if configure.ac contains no
	    AM_GNU_GETTEXT_VERSION or AM_GNU_GETTEXT_REQUIRE_VERSION invocation.
	  - nls.m4 is installed again under $PREFIX/share/aclocal/.
	Portability:
	  - Building on native Windows with MSVC and --enable-shared is now supported.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>