Without using AC_INCLUDES_DEFAULT explicitly,
certain platforms will complain that the header
was found, but not usable by the compiler.
This happens for instance on Solaris where certain
headers are needed to pull in proper defines.
Also upgrade to newer autoconf syntax and use proper quoting.
https://bugzilla.gnome.org/show_bug.cgi?id=667293
This is how we do it in the other modules, and gets rid of the annoying
dirty status for common when doing git status (at least once you clean
out the old files from there).
Original commit message from CVS:
this patch fixes arts and artsd compilation problems. this is necessary for make
dist to work. i know plugins are being moved, though, this needs to be ported to
the -plugins module.
* experimental and broken selection now use GST_CHECK_FEATURE, for what it's worth
* crucial fixes to arts m4's that need backporting to autostars and -plugins
* make gst-feature less frantic in reporting missing plugins
* cleanups and misc arts fixes
