compiz: Changes to 'master'

[Dennis Kasprzyk]

 include/compiz-core.h |    6 +
 plugins/blur.c        |  222 +++++++++++++++++++++++++++++++-------------------
 src/screen.c          |   17 ++-
 3 files changed, 157 insertions(+), 88 deletions(-)

New commits:
commit bb8317d6e18a1c2da587f3313fadae42715e04a1
Author: Dennis Kasprzyk <onestone at opencompositing.org>
Date:   Tue Apr 8 17:16:50 2008 +0200

    Increased first pass shader buffer, to fix buffer overflows with gaussian shader radius bigger than 12.

commit 7d6d5c0ce9eb41dab52775d4c8793ddf0fb31c84
Author: Dennis Kasprzyk <onestone at opencompositing.org>
Date:   Tue Apr 8 17:11:49 2008 +0200

    Fetch blur texture in multiple indirection steps, if there aren't enough fragment shader temporaries.

commit 1837c50dfca8bff7db63ec1e75c1f6147e13e5e7
Author: Dennis Kasprzyk <onestone at opencompositing.org>
Date:   Tue Apr 8 17:10:07 2008 +0200

    Added glGetProgramiv to screen sturct to be able to get fragment program limitations.