source syncing ftl - Added 'sf.spec.sourcesync.archive' preference to do 'hg archive' instead of 'hg sync'. If set and the repo sync is s'posed to be synced by tag it still does the slower clone+update behaviour.

29394d95b3e1a63e73a3f3e31f9bab42cc1437f5 fbf_configs_0.0.a
36d82a2f1f927cbe91926e19c69fe74d9170b7de PDK_2.0.c
633b96a83005daab9464a00b8fcbcfa96a247c26 PDK_2.0.d