Handle the <MYSELF> and <MAILTO> special tags.
The tag <MYSELF> is only valid in the `From:' field and <MAILTO> in the
`To:' field. These tags are meant to ease the use of the --use-log-file
option introduced recently. You can generate a stub without even filling
the `From:' and `To:' fields and let svn-wrapper do it for you.
Feature requested by Akim Demaille (like the --use-log-file one).
* get_mailto_property: New. Factored out of svn_commit.
* svn_commit: Don't screw up the log file if --use-log-file is used
several times without actually committing.
Handle the <MYSELF> and <MAILTO> tags.
Signed-off-by: Benoit Sigoure <tsuna@lrde.epita.fr>