Quash the rest of the empty revisions.
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-rwxr-xr-x 523 filter-subdirs
-rwxr-xr-x 6041 git-migrate
-rwxr-xr-x 1931 git-migrate-fast.sh
-rw-r--r-- 1176 merges
-rw-r--r-- 1449 package-list
-rw-r--r-- 6920 rules.mako