COMP: use 'cc' instead of 'mpicc' on Cray (issue #28)

- the cray 'cc' handles mpi paths, there is no mpicc

SOURCES.txt

-Quick summary of third-party versions for recent OpenFOAM versions.
+Short summary of third-party software versions for recent OpenFOAM versions.
 
 OpenFOAM-1712
 ---------------
@@ -8,6 +8,7 @@ boost_1_64_0
 fftw-3.3.7          *minor*
 openmpi-1.10.4
 scotch_6.0.3
+kahip-2.00d         *new*
 
 
 OpenFOAM-1706
@@ -50,11 +51,19 @@ scotch_6.0.3
 
 OpenFOAM-v2.4+
 ---------------
-CGAL-4.6
+CGAL-4.6            *update*
 ParaView-4.1.0
-cmake-2.8.12.1
-openmpi-1.8.5
-scotch_6.0.3
+openmpi-1.8.5       *update*
+scotch_6.0.3        *update*
+
+
+---------------
+OpenFOAM-v2.3
+---------------
+CGAL-4.3
+ParaView-4.1.0
+openmpi-1.6.5
+scotch_6.0.0
 
 
 ---------------

etc/tools/ParaViewFunctions

@@ -16,7 +16,7 @@
 #     ParaView make/install helper functions
 #
 # Note
-#     Obtainining paths via 'python-config' is possible, but may not always
+#     Obtaining paths via 'python-config' is possible, but may not always
 #     resolve properly:
 #
 #         python-config --includes

etc/tools/ThirdPartyFunctions

@@ -13,7 +13,7 @@
 #     etc/tools/ThirdPartyFunctions
 #
 # Description
-#     Functions for managing the third-party packages
+#     Various functions used in building ThirdParty packages
 #
 #     Define the standard buildBASE and installBASE for the platform
 #     Define WM_NCOMPPROCS always.
@@ -46,16 +46,21 @@ useGccFlag()
     done
 }
 
-# Return mpiicc (for INTELMPI) or mpicc etc.
+# Return <mpicc> by default or <mpiicc> if possible for INTELMPI.
+# Cray doesn't have <mpicc>, but its <cc> manages mpi paths directly.
+# NOTE: could further refine based on $CC or $WM_CC, but not yet needed
 whichMpicc()
 {
-    local mpicc
+    local mpicc=$(command -v mpicc)
     case "$WM_MPLIB" in
     (INTELMPI)
-        mpicc=$(command -v mpiicc)      # Try using intel 'mpiicc'
+        mpicc=$(command -v mpiicc)  # Intel <mpiicc> available?
+        ;;
+    (CRAY-MPI*)
+        : ${mpicc:=cc}              # Cray <cc> if there is no <mpicc>
         ;;
     esac
-    echo "${mpicc:-mpicc}"              # mpiicc | mpicc
+    echo "${mpicc:-mpicc}"
 }
 
 #------------------------------------------------------------------------------
@@ -105,7 +110,6 @@ else
     WM_NCOMPPROCS=1
 fi
 export WM_NCOMPPROCS
-# echo "Building on $WM_NCOMPPROCS cores"
 
 
 #