hdf5_complex meaningful check
cmake script update
Merge branch 'mc'
moved cmake module find
allow to search for an mpi compiler and check if it is the same as CMAKE_CXX_COMPILER
mpi : default negative value for a check
Merge pull request #24 from ALPSCore/mpi_update

MPI: allow to search for mpi and check if it matches CXX
removed ngs from mpi header