--with-module can now take more than one module to be statically

linked: --with-module=<modtype>:<modfile>,<modtype>:<modfile>,...
If the <modtype>-subdirectory doesn't exist it will be created and
populated with a standard Makefile.in.

MFC: 124600
Reviewed by: erikabele, jerenkrantz, fielding


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@151372 13f79535-47bb-0310-9956-ffa450edef68