Git transition patch

Git transition patch

All bzr revision IDS, and all CVS revision IDs for which a commit
could be identified, were changed to time-date!committer version
stamps. All .cvsignore files in the history became .gitignore files.
Fixes-bug annotations from bzr were copied into the corresponding
commit comments.

(The first .cvsignore commit was 1999-09-30T14:07:54Z!fx@gnu.org>.
The last CVS commit was <2009-12-27T08:11:12Z!cyd@stupidchicken.com>)

Committer/author email addresses are generally correct for the
transition day, not necessarily when the commit was originally made.