git-p4: Add copy detection support
git-p4: Add copy detection support

Add new config options:
    git-p4.detectCopies         - Enable copy detection.
    git-p4.detectCopiesHarder   - Find copies harder.
The detectCopies option should be set to a true/false value.
The detectCopiesHarder option should be set to true/false value.
P4Submit can now process diff-tree C status and integrate files accordingly.

Signed-off-by: Vitor Antunes <1c783bcb8ddce057036f6cb610d921d7db506cbf@gmail.com>
Acked-by: Pete Wyckoff <1a91d62f7ca67399625a4368a6ab5d4a3baa6073@padd.com>
Acked-by: Tor Arvid Lund <10881b5c954573e37687444135aa1ca5b764260c@gmail.com>
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