Improve Private Storage detection. MCabber now correctly detects Private Storage support when receiving an item-not-found error (which doesn't mean the server has no support for P.S., but that it's empty). I've added a return value to the callback functions. For now the return value is only used for IQ error handling.

EXTRA_DIST = connwrap.c md5.c connwrap.h md5.h connwrap.spec
SUBDIRS = 
INCLUDES = 
CPPFLAGS = 
noinst_LIBRARIES = libconnwrap.a
libconnwrap_a_SOURCES =  connwrap.c md5.c
AUTOMAKE_OPTIONS = foreign