KaarPux version 4.0.0: clang version 3.4

• Building packages with clang/llvm 3.4
• LibreOffice updated to version 4.1.4.2
• Linux Kernel updated to version 3.12.6
• Bugs fixed, packages updated and minor improvements

We now include clang version 3.4.
Most packages are now compiled with this clang version.
However, bootstrap packages, and a few "troublesome" packages are compiled with gcc.