CONFIG: adjust paraview libs, intelmpi handling

- fix overly aggressive match in the API value

- allow `INTELMPI*` generic value, this can be used to specify something
  like INTELMPI_custom and populate the corresponding wmake rule
  manually

STYLE: mention FOAM_BUILDROOT in wmake -help-full output

STYLE: adjust openfoam shell session welcome information

- adjust internal variable names to reduce collision potential

- improve handling of openfoam -etc=...

bin/tools/source-bashrc

@@ -39,16 +39,18 @@ fi
 
 #------------------------------------------------------------------------------
 
-if [ -d "$projectDir" ]
+_com_openfoam_projectDir="$projectDir"
+if [ -d "$_com_openfoam_projectDir" ]
 then
-    _foamSourceBashEnv="$projectDir/etc/bashrc"
+    _com_openfoam_bashrcFile="${_com_openfoam_projectDir}/etc/bashrc"
 else
-    unset _foamSourceBashEnv
+    unset _com_openfoam_bashrcFile
 fi
 
 
-# Source the user bashrc first.
-# Simply hope that they don't unset/reset _foamSourceBashEnv !!
+# Source the user bashrc first. Improbable they use the following variables:
+# * _com_openfoam_bashrcFile
+# * _com_openfoam_projectDir
 
 if [ -f "$HOME/.bashrc" ]
 then
@@ -58,20 +60,46 @@ fi
 
 # Source the OpenFOAM etc/bashrc
 
-if [ -f "$_foamSourceBashEnv" ]
+if [ -f "$_com_openfoam_bashrcFile" ]
 then
-    . "$_foamSourceBashEnv" $FOAM_SETTINGS
+    . "$_com_openfoam_bashrcFile" $FOAM_SETTINGS
 
     # Avoid further inheritance
     unset FOAM_SETTINGS
+else
+    echo "Missing OpenFOAM etc/bashrc in '${_com_openfoam_projectDir}'" 1>&2
+fi
+unset _com_openfoam_bashrcFile _com_openfoam_projectDir
 
-    # Some feedback
-    if [ -n "$PS1" ] && [ -d "$WM_PROJECT_DIR" ]
+
+# Welcome banner - format somewhat like Ubuntu welcome
+#----
+## Welcome to Ubuntu VER (GNU/Linux ... x86_64)
+##
+## * Documentation:  ...
+#----
+
+if [ -n "$PS1" ]  ## Interactive
+then
+    if [ -d "$WM_PROJECT_DIR" ]
     then
         _foam_api="$("$WM_PROJECT_DIR"/bin/foamEtcFile -show-api 2>/dev/null)"
         _foam_patch="$("$WM_PROJECT_DIR"/bin/foamEtcFile -show-patch 2>/dev/null)"
         _foam_build="$("$WM_PROJECT_DIR"/bin/foamEtcFile -show-build 2>/dev/null)"
 
+        unset _foam_arch1
+        case "$WM_OPTIONS" in  # Or WM_LABEL_SIZE?
+        (*Int32*) _foam_arch1="label=32" ;;
+        (*Int64*) _foam_arch1="label=64" ;;
+        esac
+
+        unset _foam_arch2
+        case "$WM_OPTIONS" in  # Or WM_PRECISION_OPTION?
+        (*SPDPInt*) _foam_arch2="scalar=32;solveScalar=64" ;;
+        (*SPInt*)   _foam_arch2="scalar=32" ;;
+        (*DPInt*)   _foam_arch2="scalar=64" ;;
+        esac
+
         if [ "${_foam_patch:-0}" = 0 ]
         then
             unset _foam_patch
@@ -86,15 +114,17 @@ then
             _foam_verinfo="${_foam_api}${_foam_patch:+ patch=${_foam_patch}}"
         fi
 
-        echo "Using: OpenFOAM-$WM_PROJECT_VERSION (${_foam_verinfo}) - visit www.openfoam.com" 1>&2
+        echo "openfoam = $WM_PROJECT_DIR" 1>&2
+        echo 1>&2
+        echo " * Using:     OpenFOAM-$WM_PROJECT_VERSION (${_foam_verinfo}) - visit www.openfoam.com" 1>&2
         if [ -n "$_foam_build" ]
         then
-            echo "Build: ${_foam_build}" 1>&2
+            echo " * Build:     ${_foam_build}" 1>&2
         fi
-        echo "Arch:  $WM_OPTIONS (mpi=$FOAM_MPI)" 1>&2
-        # Arch:  LSB;label=32;scalar=64
-
-        ## echo 1>&2
+        # Arch:   LSB;label=32;scalar=64
+        echo " * Arch:      $_foam_arch1;$_foam_arch2" 1>&2
+        echo " * Platform:  $WM_OPTIONS (mpi=$FOAM_MPI)" 1>&2
+        echo 1>&2
 
         # Set prompt as reminder that this is a shell session
 
@@ -102,18 +132,18 @@ then
         # PS1="openfoam${_foam_api}:"'$(foamPwd)\n\u\$ '
 
         PS1="openfoam${_foam_api}:"'\w/\n\u\$ '
+        unset _foam_arch1 _foam_arch2
         unset _foam_api _foam_patch _foam_build _foam_verinfo
+    else
+        # Adjust prompt if not found - reminder that it is a shell session
+        PS1="openfoam(not-found):"'\w/\n\u\$ '
     fi
-else
-    echo "Could not locate OpenFOAM etc/bashrc in '$projectDir'" 1>&2
+
+    echo "OpenFOAM shell session - use 'exit' to quit" 1>&2
+    echo 1>&2
 fi
 
-echo 1>&2
-echo "openfoam = $WM_PROJECT_DIR" 1>&2
-echo "OpenFOAM shell session - use exit to quit" 1>&2
-echo 1>&2
-
 # Cleanup variables (done as final statement for a clean exit code)
-unset _foamSourceBashEnv projectDir
+unset projectDir
 
 #------------------------------------------------------------------------------