Tested with snapshot gcc-5-20150215.tar.bz2

Patches provided by Bruno Santos
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=231

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1201

Currently timeStampMaster does not support re-reading of IOdictionaries in parallel

When using models which require the wallDist e.g. kOmegaSST it will
request the method to be used from the wallDist sub-dictionary in
fvSchemes e.g.

wallDist
{
    method meshWave;
}

specifies the mesh-wave method as hard-coded in previous OpenFOAM versions.

Added InfoSwitches::writeOptionalEntries which enables the writing of optional keywords and values which are not present in the dictionary
Warning: generates a VERY large number of messages from OpenFOAM applications
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1473

To compile with 64bit labels set

WM_LABEL_SIZE=64

in ~/OpenFOAM/dev/prefs.sh

source ~/.bashrc

then Allwmake in OpenFOAM-dev.

This will build into for example OpenFOAM-dev/platforms/linux64ClangDPInt64Opt

If WM_LABEL_SIZE is unset or set to 32:

WM_LABEL_SIZE=32

the build would be placed into OpenFOAM-dev/platforms/linux64ClangDPInt32Opt

Thus both 32bit and 64bit label builds can coexist without problem.

With clang-3.4 all working tutorials run without problem

Change default version to 4.1.0 (may need to revert to 4.0.1 after
further testing of 4.1.0)