Bug#538637: defect in binary xserver-xorg-core package disables compositing with kwin in KDE 4.2

[Brice Goglin <Brice.Goglin@ens-lyon.org>]

The only difference I see between your build-depends on those on the
amd64 buildd when 1.6.2-1 was built are:

> ii  libdbus-1-dev                        1.2.16-2 instead of 1.2.14-3
> ii  libdrm-dev                           2.4.12-1 instead of 2.4.11-1
> ii  mesa-common-dev                      7.5-3 instead of 7.4.4-1
> ii  libgl1-mesa-dev                      7.5-3 instead of 7.4.4-1
> ii  libx11-dev                           2:1.2.2-1 instead of 2:1.2.1-1


Mesa is by far the best candidate here. When 1.6.1.901-3 was discovered
to be completely buggy for DRI2, Michel thought some commits on the
upstream 1.6 branch may need Mesa 7.5. Xserver 1.6.2 contained some
fixes that seemed to work fine when built on Mesa 7.4.4, but I guess
KDE4 wasn't tested intensively enough. I guess we need to bump the Mesa
build-depends to 7.5 and upload rebuilt packages now.

thanks for debugging this
Brice