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- makes it easier to diagnose problems

- include comments about building Qt etc.

Update master

Update master to include stable development changes and bugfixes.

See merge request !1

- should have been in commit cd07d9f6

- Now only cleans the build/ directory.

- Add -all, -current options etc for also removing platforms,
  if wishing a complete clean.

As per patch provided by Bruno Santos @wyldckat to support Raspbian.
http://bugs.openfoam.org/view.php?id=2051

STYLE: drop unneeded linkage against old POSIX librt.so

- replace PYTHON_INCLUDE_PATH with PYTHON_INCLUDE_DIRS
  (changed in paraview 2014-10-30)

- add check for Python.h for earlier failure.
  Eg, when development headers are missing on the system.

- an example of compiling for pvserver

- make upper-limit on MPI processes command-line configurable for
  makeParaView and add MPI support into makeVTK

- Makes it easier to locate for compiling/linking and lets us
  wrap away in a C++ interface to hide low-level C routines.

- Qualify some paraview-specific functions with 'ParaView' in the name.
  This helps with code-reuse.

STYLE: use lib$WM_COMPILER_LIB_ARCH instead of explicit lib64

- ThirdParty GMP/MPFR may be needed when making CGAL, but previously
  no convenient means of compiling them without also compiling a
  ThirdParty GCC.

  Now support the combination of building GMP or MPFR, without needing
  to build GCC as well. This could benefit people using clang.

- add a '-no-theadsafe' option when building MPFR via the makeGcc
  script. This may help avoid conflicts with existing, older,
  non-thread-safe system MPFR libraries.

ENH: include ThirdParty platforms when searching for cmake

- as per the other build scripts, use the OpenFOAM config
  files for the base settings and command-line arguments
  for refinement.

  Note that the $ParaView_DIR (the installation path) contains
  the paraview version information. So there is no need to
  keep a second variable just for that purpose.

- Symmetrical with the usage for most other ThirdParty build
  scripts. For example,

      "makeParaView ParaView-5.0.1"

- As a convenience, also allow a number directly. For example,

      "makeParaView 5.0.1"

  This should be clearer than the old instruction and does not
  rely on an alias:

      "foamPV 5.0.1; ./makeParaView"

BUG: heuristics for activating GL2 rendering backend missed when
     paraview version was specified from the command-line

- improve some other feedback information

- triggered by dash. makeFFTW needed the same fix.

- triggered by dash.

- issue warning message but not failure when optional things like
  (boost, CGAL, FFTW) encounter build issues in ThirdParty Allwmake.

- update openmpi infiniband config options

ENH: patch paraview 4.4.0 directly before building

- this avoids more manual steps for the user

Rationale: 32-bit support is not normally needed for OpenFOAM and
disabling reduces build issues.

Can use the '-multilib' option to enable 32-bit support if required.

Unset the _foamAddLib function prior to sourcing config.sh/CGAL

DOC: restriction about mixing ThirdParty and system gmp/mpfr
     does not apply anymore.

- now check for existing third-party build and skip if all build
  components are unchanged.

- skip build entirely for boost-none or CGAL-none

This is primarily useful when makeCGAL is called directly and not from
Allwmake.

STYLE: use WM_COMPILER_LIB_ARCH for boost system lib

- make option parsing more consistent

- not previously possible to configure a third-party gcc
  with system gmp/mpfr/mpc.
  This makes it easier to switch between compilers for testing.

- explicitly define WM_COMPILER_TYPE=ThirdParty before sourcing
  the OpenFOAM settings. Provide system equivalents as fallbacks
  so that it is apparent what is happening.
  Make the same adjustment to makeLLVM.

BUG: inconsistent CGAL version between makeCGAL and OpenFOAM

- fixes #1

- align comments in ParaView3Functions with ParaViewFunctions
  (makes it easier to spot differences)

- mention '-buildType' option in usage
- fix the version extraction reporting
- drop broken date-stamp check

STYLE: align some naming in makeCCMIO with other files