removed autotools build environment
working on a cmake environment

Currently the project doesn't build using cmake.
I first need to figure out some library checking
stuff.
added cmake build directory
preliminary cmake support. linking still broken.
linking seems fine now (at least on osx)
put some stuff back in
fixed cmake again...
fix for non-standartd lib paths
final fix for the linking directories.
added the REQUIRED flag for libconfig and protobuf-c
better cmake implementation
fix architecture dependend library paths
Merge branch 'cmake'
added installation support to CMake environment

please note that the prefix can be changed via CMAKE_INSTALL_PREFIX
variable. it defaults to /usr/local
linking against librt now works
autogenerating DEFAULT_CONFIG via CMAKE

The DEFAULT_CONFIG preprocessor #define is now generated
based on the CMAKE_INSTALL_PREFIX of cmake. This will make
sure, that the config file is located under the same
hirarchy as the executable.
added config installation

The umurmur.example.config file gets installed into
${CMAKE_INSTALL_PREFIX}/etc so that it is automagically
found when starting umurmurd. Note, that the config file
is only installed when there is no old config file found
in this spot.
fixed a typo
added cmake flags for polarssl testcert and havege
improved cmake modules