CONFIG: adjust intel compiler and mpi settings (#2056)

- largely as per patch from Jong-Gwan (Jason) Do

NB: the intel-one setup adds in paths for intelmpi.
    Its mpicc version does not harmonize with the OpenFOAM
    system openmpi setup (using mpicc --showme:link).

    Needs adjustment, or use intelmpi instead.

- update name mappings for newer gcc, clang versions

wmake/rules/linuxIA64Icc/c++Opt

@@ -1,5 +1,4 @@
 c++DBUG     =
-
 c++OPT      = \
     -DICC_IA64_PREFETCH \
     -ansi-alias \