KaarPux version 4.8.8

• C/C++ compilers updated (llvm: v 3.6.0; gcc: v 5.1.0)
• glibc downgraded to released version (glibc: v 2.21)
• Java 8 (openjdk: v 8u45-b14)
• Many other packages updated
• Bugs fixed, minor changes and documentation updates