Log Message:
Update from version 2.16nb5 to 2.19.  Changes:

2.19  Wed Jan 26 21:57:36 CST 2005

 - We now use $r->print() instead of print() inside SSI.pm, because
   the latter seemed to have buffering problems.

 - Added a Build.PL for installation via Module::Build.

 - Modified ssi_include() to check for an HTTP_OK status from the
   subrequest in addition to an OK status from the handler. [Aaron
   Ross]

 - Fixed an undefined-value warning that occurred in the time-related
   components when the time zone wasn't set. [Aaron Ross]

 - Made some modernization updates to the Apache::test module we use
   during testing.

 - Use Test.pm for testing output rather than my custom stuff.

2.18  Tue Jan 22 12:22:16 CST 2002
   Doing an include can mess up %ENV (and thus the query string, and
   the table of set variables), so we now make sure we restore it after
   executing a subrequest.

2.17  Mon Jan 14 13:58:21 CST 2002
   Added the Apache::FakeSSI class, which implements server-side
   includes in pure-perl so that its output can be filtered via
   Apache::Filter.  Note that its <!--#exec cgi="..."--> isn't
   functional yet.

   Fixed a problem with the MANIFEST - file t/docs.check/16 was missing.