Automatically pick up the list of tools from the tool directory rather than having a list in the regression test that has to be updated.
Automatically pick up the list of tools from the tool directory rather
than having a list in the regression test that has to be updated.

git-svn-id: 7892167f69f80ee5d3024affce49f20c74bcb41d@4182 fdb21ef1-2011-0410-befe-b5e4ea1792b1

azverkan/scons,azverkan/scons,azverkan/scons,azverkan/scons,azverkan/scons