Renamed mr port to myrepos

Signed-off-by: Gregor Jasny <gjasny@googlemail.com>
Take over perforce port

Signed-off-by: Gregor Jasny <gjasny@googlemail.com>
Add gitignore

Signed-off-by: Gregor Jasny <gjasny@googlemail.com>
vcsh needs to depend on myrepos

Signed-off-by: Gregor Jasny <gjasny@googlemail.com>