Add metaOnly flag, -e option to makepatch for doing metadata-only changesets.
Add metaOnly flag, -e option to makepatch for doing metadata-only
changesets.

bk: 39c94922x8ZzeqPgs5vZbgPmrSG6TQ
bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper