fcm make: preprocess: support prop{*include-paths}
fcm make: preprocess: fix bad command in test
Merge pull request #54 from matthewrmshin/cpp-include-paths

fcm make: preprocess: support prop{*include-paths}
fcm make: extract: prepare for alt loc types
FCM::Util::Locator::SSH: new locator type

This handles locators on file systems on remote hosts accessible via SSH
and RSYNC.