Making it so orocos_use_package doesn't add excessive flags from packages that were found through some other means
useorocos: minor update to @jbohren's patch in a244593786bce8a6d0fa3ecd767b44f241b1ae49

Signed-off-by: Johannes Meyer <johannes@intermodalics.eu>
useorocos: always store OROCOS_NO_AUTO_LINKING in the cache and check ORO_USE_ROSBUILD variable to enforce rosbuild-style builds

Signed-off-by: Johannes Meyer <johannes@intermodalics.eu>
useorocos: updated output and doc strings for the case rosbuild-style was selected based on the ORO_USE_ROSBUILD cmake variable

Signed-off-by: Johannes Meyer <johannes@intermodalics.eu>
Merging @meyerj's updates