bug 1907: if SA is installed into a non-standard location, and the modules are called by a third party set of programs that don't pass in PREFIX, the modules will probably not be able to figure out where the rules and such are.  added a make-time PREFIX default setting to SA.pm such that if PREFIX isn't passed in, the modules can at least make an educated guess about where to find the rules and such.
bug 1907: if SA is installed into a non-standard location, and the modules
are called by a third party set of programs that don't pass in PREFIX,
the modules will probably not be able to figure out where the rules and
such are.  added a make-time PREFIX default setting to SA.pm such that
if PREFIX isn't passed in, the modules can at least make an educated
guess about where to find the rules and such.


git-svn-id: d99324e817494df82bb0080d8e7ab74680731a10@5383 13f79535-47bb-0310-9956-ffa450edef68

apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin