git-mailinfo: use strbuf's instead of fixed buffers
git-mailinfo: use strbuf's instead of fixed buffers

Signed-off-by: Lukas Sandström <9c3f03a42f8427ddbec9b42d1b838ff746e70fab@etek.chalmers.se>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git