[cmake-developers] GNUInstallDirs.cmake and Debian multiarch into next

[Alexander Neundorf]

Hi,

yesterday I pushed the GNUInstallDirs-DebianMultiarch branch to stage.
This has only one commit, it adds support for multiarch on Debian ti 
CMAKE_INSTALL_LIBDIR.
I'd like to get that into 2.8.7, but I didn't want to merge it into next 
without having it reviewed by you.
So, can you please have a look at it ?

With this patch, on Debian multiarch, CMAKE_INSTALL_LIBDIR is now initialized 
to "lib/i386-linux-gnu/" instead of simply "lib", as recommended by multiarch.

Thanks
Alex