Git.pm: Enhance the command_pipe() mechanism
Git.pm: Enhance the command_pipe() mechanism

Rename command_pipe() to command_output_pipe(), outsource
the functionality to _command_common_pipe().

Add command_input_pipe().

Signed-off-by: Petr Baudis <2df6472652419df7dced808d07835f28963a653f@suse.cz>
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