Pcbnew: fix Bug #1156193 . Fix compil issues when KICAD_SCRIPTING_WXPYTHON is not enabled and KICAD_SCRIPTING is enabled
checkcoding.py refactor from Edwin van den Oetelaar, some extra refactorings by me, improvement suggestions from Carl Poirier
More encapsulation work.

* Complete encapsulation of the MODULE class.
* Complete encapsulation of the EDA_TEXT class.
* Encapsulate most of the ZONE_CONTAINER class.
* Add pcbcommon library as a dependency for reSWIGging the scripting
  support.  This should cover most dependency cases.
Add library column to component and module select dialog.
Consistent with my email posting from a day or two ago, remove the translated
standard layer name support from BOARD::GetLayerName().  This function evolved
in a contorted direction over time, and was being asked to return one of 3
different kinds of layer names, even though it only took a boolean to control
that choice.  

Users are better served by forcing them to get to know the concise new 
English Standard layer names.  This is because these concise names show up
in the "pretty" footprint/module files as the standard representation of
both feature and copper layers.

Change the name of BOARD::GetDefaultLayerName() to GetStandardLayerName().
Drop boolean argument to both BOARD::GetStandardLayerName() and 
BOARD::GetLayerName().
Encapsulation, bug, context menu string, and, coding policy fixes.

* Complete encapsulation of the ZONE_CONTAINER class.
* Fixed a bug in the EDA_TEXT::Format() default effects behavior due to
  improper conversion to internal units and missing test for default
  thickness.
* Improved grammar of some Pcbnew context menu strings.
* Moved some more cleverly hidden BOARD object methods into class_board.cpp.
* Lots of coding policy and documentation fixes.
Pcbnew, ModEdit: fix issue when setting anchor position, and minor code cleaning.
eeschema: fix build when KICAD_GOST ON (insert in bzr4019)
Very minor changes in dialog zones.
Pcbnew: fix issue in zone keepout dialog: layers not displayed on Linux
Fix SCH_FIELD get reference designator text bug. (fixes lp:1159401)
Pcbnew: fix issue in zone keepout dialog: layers not displayed on Linux, and minor changes
Pcbnew: fix issue in zone keepout dialog: layers not displayed on Linux, and minor changes
Pcbnew: Fix a collision name between 2 methods: EDA_ITEM::GetFlags() and ZONE_CONTAINER::GetFlags(), which creates a very strange behavior when creating/edition zones.
ZONE_CONTAINER::GetFlags() is now named  ZONE_CONTAINER::GetLocalFlags().
Pcbnew: fix an issue when texts in footprints have a size = 60 mils (default size for texts). After saving and reading the .kicad_pcb file, the size was not correct.
Fix field text position access bug in Eeschema. (fixes lp:1160214)
Pcbnew: Fix Bug #1160396
Removed unused define TEXT_VTAB_HEIGHT
remove interrim fix, no longer needed
reference a test program in a comment