2.6.25 does. I recommend marking 2.6.25 stable.
The error I get:
22:38:45 (643.48 KB/s) - `/usr/portage/distfiles/xfsprogs-2.6.13.src.tar.gz' saved [846585/846585]
>>> md5 src_uri ;-) xfsprogs-2.6.13.src.tar.gz
>>> Unpacking source...
>>> Unpacking xfsprogs-2.6.13.src.tar.gz to /var/tmp/portage/xfsprogs-2.6.13/work
* Applying 2.6.13-uclibc-mincore.patch ... [ ok ]
* Applying 2.6.13-configure.patch ... [ ok ]
autoheader-2.59: warning: missing template: HAVE_32BIT_LONG
autoheader-2.59: Use AC_DEFINE([HAVE_32BIT_LONG], [], [Description])
autoheader-2.59: warning: missing template: HAVE_32BIT_PTR
autoheader-2.59: warning: missing template: HAVE_64BIT_LONG
autoheader-2.59: warning: missing template: HAVE_64BIT_PTR
autoheader-2.59: warning: missing template: HAVE___PSINT_T
autoheader-2.59: warning: missing template: HAVE___PSUNSIGNED_T
autoreconf-2.59: /usr/bin/autoheader-2.59 failed with exit status: 1
!!! ERROR: sys-fs/xfsprogs-2.6.13 failed.
!!! Function src_unpack, Line 38, Exitcode 1
!!! autoreconf
!!! If you need support, post the topmost build error, NOT this status message.
