gitweb: Make the Git logo link target to point to the homepage
gitweb: Make the Git logo link target to point to the homepage

It provides more useful information for causual Git users than the Git docs
(especially about where to get Git and such).

People can override with GITWEB_CONFIG if they want to.

Signed-off-by: Petr Baudis <2df6472652419df7dced808d07835f28963a653f@suse.cz>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>
Acked-by: Petr Baudis <2df6472652419df7dced808d07835f28963a653f@suse.cz>

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