Use ${datarootdir} instead of ${datadir} for data files that go
in directories which are shared with other apps.

	modified:   configure.ac
Systematically #include "config.h". Better fix for #256.
Prevent <cdio/cdio_config.h> from being included at all. Closes: #265.
scrobbler: Replaced by scrobbler2.
scrobbler2: Link with -lrt (needed for CLOCK_GETTIME in older glibc).
scrobbler2: Remove unused header.
./configure will now error if a plugin is explicitly enabled but cannot be built.
Use AS_HELP_STRING consistently.
Patch from Bartosz Brachaczek, via GitHub.
Remove --enable-ipv6 option; it is not used by anything.
Fix blank "Install Path:" line in configure output.
Merge pull request #8 from cjsthompson/master

Use ${datarootdir} instead of ${datadir} for installing translations.
Only complain about aosd being disabled if enable_aosd_xcomp = yes. (See http://redmine.audacious-media-player.org/boards/1/topics/736.)