Patch: backport libintl changes to allow -Wformat checking of libintl_gettext and friends

[Tristan Gingold]

Hi,

this libintl patch
http://sourceware.org/ml/binutils/2009-05/msg00214.html

was approved by Joseph S. Myers
http://sourceware.org/ml/binutils/2009-05/msg00218.html

but was never applied.  It will be useful to fix gdb warnings on Darwin.
Can I apply it ?

Tristan.