Gebview: fix issue in export to pcbnew (Track arc shapes are now exported, approximated by segments)

Pcbnew: fix issue when KICAD_NANOMETER is defined: when zones use htcth to show zones areas, hatch lines were incorrectly calculated (hunded of thousand lines created)
Eeschema: fix issue in search: search not made in reference strings.
Minor fixes, code cleaning and comment enhancements.

Better code in test connections in zones.
Very minor other fixes

Some code restyling: VECTOR_PCB is an array. Cleanup uncontrolled definitions of abs, max, etc. max is now overloaded function and MAX is a macro.

* Fix debug build warning (lp:793373).
* Changed sheet edit restore and undo to use object copy and replace method.
* Add minimum width and height constraints when resizing sheets that have
  hierarchical pins.
* Fix drag sheet hot key bug.
* Change Doxygen configuration to extract private methods and members
  when creating documentation.
* Fix a bunch of Doxygen comment warnings.

* Fixed ambiguous call to sqrt() MSVC compiler error.
* Fixed a bunch of type conversion warnings in GCC 3 (MinGW).

Eeschema: cleaning code. Start work to enhance annotation algorithm.
Already added an option to annotate using sheet number (sheet 1 uses numbers 100 to 199, sheet 2 uses 200 to 299..).
Works fine if deleting existing annotation, but needs work to be used when the existing annotation is kept .

Pcbnew: fix a serious bug in ZONE_CONTAINER::HitTestFilledArea( ) which could break connectivity calculations relative to copper areas.
Fix also very minor issues relative to copper zones.
Update boost::polygon from Boost svn repository.

can be deleted later if they exist in the headers, or moved to 
headers if they should exist in the headers.

Fix bug in PolyLine.cpp, Fix bug in DRC calculations (see changelog). Cvpcb: move dialog files in dialogs/

Tried to fix a problem under Vista and Window 7 in fill zone: sometimes Pcbnew crashes.
Could be a bug in Kbool (see changelog).

But this problem needs more investigations

--no commit message

* Created separate SVN version header.
* Add true config.h for platform dependency checks.
* Add dependency check cmake module.
* Remove some leftover hand crafted make files.
* Remove non-cmake build instructions from COMPILING.txt.
* Fix split _() strings causing Visual C++ compiler error.
* Fix lots of compiler warnings.
* Change project file parameter container from wxArray to boost::vector_ptr.
* Removed lots of redundant header definitions.
* Fixed green_xpm redefinition in ercgreen.xpm.
* Remove some dead code and unnecessary class methods.

Global variable unobfuscation, new library path search, and lots of other changes.  See CHANGELOG.txt.

gr_basic.cpp now clips filled polygons,using the Sutherland and Hodgman algo to clip the poly against a rectangle
Filled polygons are now correctly displayed under Linux(i hope)