Use notes to store p4 info

P4 info is now stored in git notes. This doesn't modify the commit message
when submitting to Perforce which makes it easier possible to share the git
repo.

Note that you need to re-import from Perforce since it's not backwards
compatible. Notes in git are relatively new, so you need a fairly recent
git version (>= 1.7, although 1.6.6 might also work).

Change-Id: Ia058c3b80060059dfeb9cc27d1b17047c4078707

Author: ermshiperete

.gitignore

@@ -1,2 +1,3 @@
 *~
+*.pyc
 

README.txt

@@ -8,7 +8,8 @@ The following options can be set in the config file:
 	git-p4.client
 	git-p4.detectRename (only affects submitting from git to p4)
 	git-p4.detectCopy (only affects submitting from git to p4)
-	git-p4.allowSubmit
+	git-p4.allowSubmit (comma-separated list of branch names that are allowed to submit to p4)
 	git-p4.syncFromOrigin
 	git-p4.useclientspec
+	git-p4.importIntoRemotes