These are just minor bug fixes to the configure script and header files.
***CHANGES***
Properly detect libreadline.
Fatal error messages for missing get_opt_long(), dl_open(), and
pthread_create().
No longer try to optimize for sse/mmx/altivec.
Removed stale header from jack.h (jack_port_connect)
JACK is available at
http://jackit.sf.net
Taybin