Merge pull request #115 from mjmottram/master

remove empty compile flags
Updates ready for rat-4.3.0.

New root-5.34.08 and rat-4.3.0 versions. Also updated help text to point at the companion rather than the snoing wiki.
Added rattools-4.3.0 to match rat-4.3.0
Move rat-dev to use root-5.34.08
Added new  command to clean the cache directory.
Update for SL6.

Include ossp-uuid (open source version).
Also update xxx-config checking to be more robust.
added rattools 4.3.0 patch
added PythonDev26 for Sl6