Squashed commit of the following:

Squashed commit of the following:

commit 769fe6be0d15669eec7308b6f8d1e17124187814
Author: Michael Wallner <mike@php.net>
Date:   Mon Jan 25 12:18:07 2016 +0100

    less $(shell), better Makefile

commit 0a6d8d038ea3143809a14a00bc6a7c7f9f6e236a
Author: Michael Wallner <mike@php.net>
Date:   Mon Jan 25 12:08:55 2016 +0100

    build ext in checkout dir

commit 33aee54b6afe7f1207c88b51b570b8dc16a49a09
Author: Michael Wallner <mike@php.net>
Date:   Fri Jan 22 20:18:35 2016 +0100

    oneliner

commit 1903e5867ae79f3e88d2c31aecdbe0bd229f02bd
Author: Michael Wallner <mike@php.net>
Date:   Fri Jan 22 14:20:08 2016 +0100

    not sure where I thought that CURDIR came from

commit 897a8b2b63b76c230dc265fd965f9346316bf93f
Author: Michael Wallner <mike@php.net>
Date:   Fri Jan 22 13:59:32 2016 +0100

    build ext in CURDIR