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)

Allwmake

@@ -25,14 +25,25 @@ if [ -d "$WM_THIRD_PARTY_DIR" ]
 then
     $WM_THIRD_PARTY_DIR/Allwmake
 else
-    echo "Allwmake: no ThirdParty directory found - skipping"
+    echo "No ThirdParty directory found - skipping"
 fi
 
-# Compile OpenFOAM libraries and applications
+echo "========================================"
+echo "Compile OpenFOAM libraries"
+echo
 src/Allwmake $targetType $*
 
-# Compile OpenFOAM libraries and applications
+echo "========================================"
+echo "Compile OpenFOAM applications"
+echo
 applications/Allwmake $targetType $*
 
-
+# Some summary information
+echo
+/usr/bin/date
+echo "========================================"
+echo "  ${WM_PROJECT_DIR##*/}"
+echo "  $WM_COMPILER $WM_COMPILER_TYPE compiler"
+echo "  ${WM_OPTIONS}, with ${WM_MPLIB} ${FOAM_MPI}"
+echo
 #------------------------------------------------------------------------------