pending issues from gnulib

[Eric Blake <ebb9 at byu dot net>]

I would be interested in any feedback on the following bugzilla entries,
which stem from some fixes that have been made in gnulib in files
originally borrowed from glibc:

http://sources.redhat.com/bugzilla/show_bug.cgi?id=10296 - as a QoI
improvement, <ctype.h> should allow gcc -Wall to alert users to their
undefined usage of isalpha((char)c)

http://sources.redhat.com/bugzilla/show_bug.cgi?id=10349 - git would
prefer to use mkstemps (from BSD) instead of mkstemp for creating
temporary files with known suffixes.  And with the recent addition of
glibc's mkostemp, we may also want mkostemps

http://sources.redhat.com/bugzilla/show_bug.cgi?id=10412 - error()
triggers undefined behavior when stdout is closed

http://sources.redhat.com/bugzilla/show_bug.cgi?id=10609 - openat() and
friends fail to detect ENOENT on older kernels when using /proc/self/fd

http://sources.redhat.com/bugzilla/show_bug.cgi?id=10635 - realpath() can
lose errno on error path, and doesn't allow handling leading //

-- 
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net