maint.mk: use info-gnu@ as the default only for a stable release
* top/maint.mk: Don't default to info-gnu for alpha or beta releases.
For those, just use $(PACKAGE_BUGREPORT), in which case we don't have
to set the Mail-Followup-To header. Prompted by Reuben Thomas in http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/26488
assert-h: new module, which supports C1X-style static_assert
* lib/assert.in.h, m4/assert_h.m4, modules/assert-h: New files.
* lib/verify.h: Revamp so that this can be copied into assert.h,
while retaining the ability to use it standalone as before.
Rename private identifiers so as not to encroach on the
standard C namespace, since this is now used by assert.h.
(_GL_VERIFY_TYPE): New macro, factoring out differing parts of
the old verify_true.
(_GL_VERIFY_TRUE): New macro, with much of the contents of
the old verify_true. Use _GL_VERIFY_TYPE.
(_GL_VERIFY): New macro, with much of the contents of the old verify.
(static_assert): New macro, if _GL_STATIC_ASSERT_H
is defined and static_assert is not; _GL_STATIC_ASSERT_H is
defined when this file is copied into the replacement assert.h.
(_Static_assert): New macro, if _GL_STATIC_ASSERT_H is defined
and _Static_assert is not built in.
(verify_true, verify): Define only if _GL_STATIC_ASSERT_H is not
defined, and use the new macros mentioned above.
* doc/posix-headers/assert.texi: Document this.
fflush, fseeko: Respect rules for use of AC_LIBOBJ.
* m4/fflush.m4 (gl_FUNC_FFLUSH_STDIN): New macro, extracted from
gl_FUNC_FFLUSH.
(gl_FUNC_FFLUSH): Use it.
(gl_REPLACE_FFLUSH): Don't invoke gl_REPLACE_FSEEKO.
* m4/fseeko.m4 (gl_FUNC_FSEEKO): Invoke gl_FUNC_FFLUSH_STDIN and
gl_REPLACE_FSEEKO here.
