platform build - added 'sf.os.compile.iterate' variable to iterate though the main targets rather than all at once to work around raptor problems with single model.

Split sf-run-analysis into bit-sized targets, which can run in parallel to reduce the post-build time on a platform build.

catchup merge

minor fix - creation of 'generated' dir for caching files.

raptor parser.pl - adding XML::SAX perl modules (public domain code - http://www.saxproject.org/faq.html) so we don't have to patch up every single build machine.

merge