Fix license in fastlog.

Date: Mon, 22 Apr 2013 19:09:04 +0200
From: Laurent de Soras <laurent.de.soras@free.fr>
To: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Subject: Re: License of FastLog

Hi Adrian,

> Several open-source projects like Ardour use the code below which has
> no explicit license.
>
> If you agree (read: reply), we'd like to add the MIT license to this
> file, that is, change the copyright statement to the following text:

Nowadays I license my code under the WTFPL, which should
be compatible with the traditional open source licenses.
So please use this one instead:
<http://www.wtfpl.net/about/>

--
Laurent de Soras                  |               Ohm Force
DSP developer & Software designer |  Digital Audio Software
http://ldesoras.free.fr           | http://www.ohmforce.com
Drop obsolete powermate code from libs/surface
Delete *.bak files
Disable obsolete compilation of libs/pds/dmalloc.cc

The file relies on -DDEBUG_MALLOC and references

  #include "/usr/local/src/dmalloc-4.1.2/return.h"

It is safe to assume that it's dead code.
Drop obsolete dmalloc.cc from libs/pbd.

The file relies on -DDEBUG_MALLOC and references

i   #include "/usr/local/src/dmalloc-4.1.2/return.h"

It is safe to assume that it's dead code.
Drop obsolete gtk2_ardour/canvas-imageframe.c

The code is not referenced in the build system anymore.
Add proper GPL license to gtk2_ardour/canvas-imageframe.h

Since the file has been part of libgnomecanvas, it is GPL, too.
Merge important bits from canvas-image.h into imageframe.h
Drop obsolete file canvas-imageframe.h
Drop obsolete file gtk2_ardour/imageframe.cc
Merge branch 'license-fix' of https://github.com/adiknoth/ardour