useorocos: removed quotes from most of the cmake variable assignments in UseOROCOS-RTT-helpers.cmake

This will probably fix the "rpath contains extensive colons" problem (#9).

Signed-off-by: Johannes Meyer <johannes@intermodalics.eu>
Merge branch 'useorocos-removed-quotes' into destdir-support

Conflicts:
	UseOROCOS-RTT-helpers.cmake