Log Message:
Problem:

1) The libintl.h from gettext-lib renames the gettext functions so that
   they are prefixed with 'libintl_' (So that the functions named in
   libintl don't conflict with any that maybe in libc).

2) gettext-tools is _always_ built with gettext-lib.

3) The tools architecture may make gettext-tools a build dependence or
   someone may choose to install gettext-tools.

4) The OS has built in gettext.

5) For some reason ${PREFIX}/include is add to the compiler search path and
   libintl.h from gettext-lib is found before the system one.

The result is that all the gettext functions are renamed to have the
'libintl_' prefix but libintl is not linked with and the following happens:

${FILENAME}: undefined reference to `libintl_gettext'
${FILENAME}: undefined reference to `libintl_textdomain'
${FILENAME}: undefined reference to `libintl_bindtextdomain'
collect2: error: ld returned 1 exit status

Solution:
Hide libintl.h from gettext-lib in ${PREFIX}/include/gettext then add that
to the compiler search path when realy needed.

This should permanently fix PR's pkg/24326 pkg/36201 pkg/40153 pkg/43129
pkg/44009 and pkg/44016.

Bump PKGREVISION.