Correct references to /usr/bin/python which does not exist on FreeBSD

On FreeBSD, Python does not ship as part of the base system but is available
via the ports system, which install the binary in /usr/local/bin.

Signed-off-by: R. Tyler Ballance <tyler@monkeypox.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Makefile

@@ -831,6 +831,7 @@ ifeq ($(uname_S),FreeBSD)
 		NO_UINTMAX_T = YesPlease
 		NO_STRTOUMAX = YesPlease
 	endif
+	PYTHON_PATH = /usr/local/bin/python
 endif
 ifeq ($(uname_S),OpenBSD)
 	NO_STRCASESTR = YesPlease

contrib/fast-import/import-zips.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 ## zip archive frontend for git-fast-import
 ##

contrib/hg-to-git/hg-to-git.py

@@ -1,4 +1,4 @@
-#! /usr/bin/python
+#!/usr/bin/env python
 
 """ hg-to-git.py - A Mercurial to GIT converter
 

contrib/p4import/git-p4import.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # This tool is copyright (c) 2006, Sean Estabrooks.
 # It is released under the Gnu Public License, version 2.

git_remote_helpers/Makefile

@@ -7,8 +7,12 @@ pysetupfile:=setup.py
 DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
 
 ifndef PYTHON_PATH
+	ifeq ($(uname_S),FreeBSD)
+		PYTHON_PATH = /usr/local/bin/python
+	else
 		PYTHON_PATH = /usr/bin/python
 	endif
+endif
 ifndef prefix
 	prefix = $(HOME)
 endif