improved FindXXX wrapper (fixed overwrite of interface_link_libs and other)
improved FindMPI module.
- now looking for MPI mnemonic variable and setting standard paths to look at
- dealing with 32/64 bits (on hpc5 / intel mpi)
- using mnemonics to generate more compiler names for 'alternatives'-aware systems
- checking if the correct version is found (by patterns) if an MPI variable is set
architecture script now recognizes intel compiler and more MPI versions
fixed build macros parallel flag detection