COMP: update lnInclude directories when building (issue #364)

- Could be related to interrupted builds.
  So if there are any parts of the build that rely on an explicit
  'wmakeLnInclude', make sure that the contents are properly updated.

--

ENH: improved feedback from top-level Allwmake

- Report which section (libraries, applications) is being built.

- Provide final summary of date, version, etc, which can be helpful
  for later diagnosis or record keeping.

- The -log=XXX option for Allwmake now accepts a directory name
  and automatically appends an appropriate log name.
  Eg,
      ./Allwmake -log=logs/  ->> logs/log.linux64GccDPInt32Opt

  The default name is built from the value of WM_OPTIONS.

--

BUG: shell not exiting properly in combination with -log option

- the use of 'tee' causes the shell to hang around.
  Added an explicit exit to catch this.

--

- Detecting the '-k' (-non-stop) option at the top-level Allwmake, which
  may improve robustness.

- Explicit continue-on-error for foamyMesh (as optional component)

- unify format of script messages for better readability

COMP: reduce warnings when building Pstream (old-style casts in openmpi)

wmake/scripts/AllwmakeParseArguments

@@ -71,13 +71,24 @@ do
         # If called from wmake (to avoid recursion)
         fromWmake=true
         ;;
+    -k | -non-stop)
+        # Non-stop compilation, ignoring errors
+        export WM_CONTINUE_ON_ERROR=true
+        continue    # Permanently remove arg
+        ;;
     -l | -log)
         optLog="log.${WM_OPTIONS:-Allwmake}"
         continue    # Permanently remove arg
         ;;
     -log=*)
         optLog="${arg##*=}"
-        [ -n "$optLog" ] || optLog="log.${WM_OPTIONS:-Allwmake}"
+        if [ -d "$optLog" ]
+        then
+            optLog="${optLog%/}/log.${WM_OPTIONS:-Allwmake}"
+        elif [ -z "$optLog" ]
+        then
+            optLog="log.${WM_OPTIONS:-Allwmake}"
+        fi
         continue    # Permanently remove arg
         ;;
     -q | -queue)
@@ -104,15 +115,21 @@ then
     if [ -z "$optLog" ]
     then
         exec wmake -all $optQueue $*
+        exit $? # Unneeded, but just in case something went wrong
     else
-        echo "logging wmake -all output to '$optLog'" 1>&2
-        exec wmake -all $optQueue $* 2>&1 | tee $optLog
+        echo "Logging wmake -all output to '$optLog'" 1>&2
+        echo 1>&2
+        exec wmake -all $optQueue $* 2>&1 | /usr/bin/tee $optLog
+        # Need to cleanup after the tee
+        rc=$? # Error code from tee (not wmake), but not entirely important
+        echo "Done logging to '$optLog'" 1>&2
+        exit $rc
     fi
 fi
 
 
 #------------------------------------------------------------------------------
-# If WM_CONTINUE_ON_ERROR not set activate the shell option "stop on error"
+# Activate the shell option "stop on error" unless WM_CONTINUE_ON_ERROR is set
 #------------------------------------------------------------------------------
 
 if [ -z "${WM_CONTINUE_ON_ERROR}" ]