Original commit message from CVS:
* gst/realmedia/Makefile.am:
* gst/realmedia/rmdemux.c: (gst_rmdemux_parse_mdpr),
(gst_rmdemux_parse_cont):
* gst/realmedia/rmutils.c: (gst_rm_utils_read_string8),
(gst_rm_utils_read_string16), (gst_rm_utils_read_tags):
* gst/realmedia/rmutils.h:
Factor out some code into rmutils.[ch]; when reading
strings, don't read beyond the available data; read
metadata strings correctly (string length is 16 bits
here, not just 8).
