Work around older libmagic versions that don't define MAGIC_MIME_TYPE.
Work around older libmagic versions that don't define MAGIC_MIME_TYPE.

This should fix the centos buildbot.

* subversion/libsvn_subr/magic.c: 
  (svn_magic__init): If MAGIC_MIME_TYPE isn't supported use MAGIC_MIME instead.
  (svn_magic__detect_binary_mimetype): Strip charset information from the
   string returned by libmagic if MAGIC_MIME was used.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion