Allow using UNC path for git repository

[efl: moved MinGW-specific part to compat/]

[jes: fixed compilation on non-Windows]

Signed-off-by: Cezary Zawadka <czawadka@gmail.com>
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

path.c

@@ -655,10 +655,3 @@ int daemon_avoid_alias(const char *p)
 		}
 	}
 }
-
-int offset_1st_component(const char *path)
-{
-	if (has_dos_drive_prefix(path))
-		return 2 + is_dir_sep(path[2]);
-	return is_dir_sep(path[0]);
-}