* configure.in (PROGRAMS_PANEL_CDPLAYER,CDROM_HOST): New test.
	Right now enables cdplayer for Linux and Solaris.
	* programs/panel/Makefile.am (SUBDIRS): Conditionally build
	`cdplayer'.
	* programs/panel/cdplayer/Makefile.am
	(libpanel_cdplayer_la_SOURCES): Build host specific cdrom backend.
	* programs/panel/cdplayer/cdrom-solaris.c: New backend for
	solaris.  Just a copy of cdrom-linux.c, replacing include of
	<linux/cdrom.h> with <sys/cdio.h>.

Notes: This compiles.  I neither have a CDROM drive nor am an admin.
So, I've no way to test this.

- Hari