x86_64: make all targets compile

Signed-off-by: Reto Achermann <reto.achermann@inf.ethz.ch>

replacing umlaute and fixing address in headers Haldeneggsteig -> Universitaetsstrasse

Signed-off-by: Reto Achermann <reto.achermann@inf.ethz.ch>

bomp: make use of default core stride if not set.

libbomp: merged xomp and bomp together and refactoration

There may be a use case where the bomp and xomp library are used
together i.e. we have a linker conflict and not the proper functions are
called.

Refactoration: instead of global variables there is a single state
pointer which can be exchanged depending on the backend to be used.
Further function pointers in this state ensure that the correct
functions are called.

added more sub functions for GCC pragma function calls.

moved omp.h into the global include directory.

merged: bomp_init with bomp_span_domain

libbomp: bugfix in number of created threads

the number of created workers were not correct, since we have to count
the master thread aswell. Further a bug reduced the number of workers in
every loop iteration and raised an exception.

adapted the test utility to provide a C++ main.

XOMP test domain update.

libxomp: added initial implementation.

Spawning of clients on the Xeon Phi.
Creating a Flounder channel between the Master and the Workers
Basic xomp.if