BUG: fix regression failure after is_win64 fix.
BUG: fix regression failure after is_win64 fix.

Add a RegOpenKeyEx 'fake' function when registry is not available.



git-svn-id: 7892167f69f80ee5d3024affce49f20c74bcb41d@4354 fdb21ef1-2011-0410-befe-b5e4ea1792b1

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