Added flag -mno-avx to tackle assembler errors during compiling on some new Intel core processors
Merge pull request #31 from ToMadoRe/hydro-devel

This PR actually just adds `${CMAKE_CXX_FLAGS}` to the `set(CMAKE_CXX_FLAGS "... ${CMAKE_CXX_FLAGS}")` commands and is therefore harmless. I will merge this for now as it allows to set the cmake flags by hand if needed. The discussion if setting flags on the commandline is the correct solution to this can be continued in #30