Patch provided by Bruno Santos
Resolves patch request https://bugs.openfoam.org/view.php?id=2425

Patch contributed by Bruno Santos
Resolves bug-report https://bugs.openfoam.org/view.php?id=2408

when Allwmake is called from wmake -all

Avoids a lot of unnecessary clutter in the compilation log.

Changed 'ld' line to include path of target library or executable.

'set -x' should be used for debugging.

Added command printing into wmake and Allwmake as a replacement for
'set -x' to log current target.

Based on patch contributed by Alexey Matveichev
Resolves feature request http://bugs.openfoam.org/view.php?id=2328

Resolves bug-report http://bugs.openfoam.org/view.php?id=2283

Patch contributed by Bruno Santos
Resolves bug-report http://bugs.openfoam.org/view.php?id=2218

Patch contributed by Paul Edwards, Intel.

The change from C++0x to C++11 allows all of C++11 functionality to be
used in OpenFOAM, in particular constructor delegation which avoids code
duplication or constructor helper functions.  However, this also means a
change to the minimum gcc version supported which is now 4.7 rather than
4.5.

Note that gcc-4.7 does not support the entire C++11 standard but does
support all of the functionality currently needed for further OpenFOAM
development.  The minimum gcc-version which supports the entire C++11
standard is 4.8 which is now the recommended minimum gcc version.

wclean: added support for automatic searching up the tree for the Make directory if in a sub-directory

Patch contributed by Bruno Santos
Resolves bug-report http://bugs.openfoam.org/view.php?id=2146

Patch contributed by Bruno Santos
Resolves bug-report http://bugs.openfoam.org/view.php?id=2144

to avoid file names which are two long for the standard GNU/Linux file systems.

A simple 'sleep' is more reliable.

then synchronize the file system to ensure all links are flushed before
compilation starts