Update git(7) man-page for the C wrapper.
Update git(7) man-page for the C wrapper.

The program 'git' now has --exec-path which needs explaining.

Renamed old "DESCRIPTION" to "CORE GIT COMMANDS" to make room for
"OPTIONS" while following follow some sort of convention.

Also updated AUTHORS section to pat my own back a bit.

Signed-off-by: Andreas Ericsson <1eabdaf488b3a3682bbca94c5f468f065cdfaf13@op5.se>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

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