in bezier_curves: changed  calculations like dx*dx to (double)dx * dx to avoid integer overflow in calculation

* Added modified version of FindwxWidgets.cmake to prevent manifest build and link errors
  with VC8.
* Fixed ambiguous math function ( sqrt, atan, cos, etc. ) call errors when building
  with MSVC.
* Moved bitmap copy bitmap source file destination to the build path to prevent source
  tree pollution and library rebuilds when building on different platforms.

Pcbnew: fixed a recent bug that could be creates errors in rats nest calculations (forgotten rats nets)

Eeschema: code cleaning

some cleanup.

Now uses only an unique default pen size for plot/print and draw items (see changelog)

* Applied sheet reference plotting patch from Lorenzo.
* Fixed bug in Pcbnew plot dialog, ignore user scaling when controls are disabled.

Minor others changes.

* 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.

Better label dialog editor. Libedit: now, cannot change the component name to an existing alias name (eeschema crashes when happens)

Code seriously cleaned, obscure and duplicated code removed, and some oddities removed.
Better support of multiline texts.

* ALL: More changes for wxDC based zooming.
* 3D_VIEWER: Wrap 3d_viewer.h to prevent redefinitions.
* CVPcb: Replace wxList with boost::ptr_vector and take advantage of boost::foreach.
* CVPcb: Fix automatic association bug.
* CVPcb: Rename some variables for clarity and some minor code clean ups.
* CVPcb: Fix GTK sizing issue in library and path dialog.
* EESchema: Remove left over sizer from last commit from library and path dialog.

code cleanup, remove multiline text option in eeschema (multiline text is a work in progress) and minor enhancements

* All: remove all remaining occurrences of g_DialogFont and dialog font menu handers.
* All: remove all remaining non-standard fonts and button text colors from common dialogs.
* PCBNew: remove all non-standard fonts and button text colors from dialogs.
* PCBNew: update project library and path dialog to match changes to CVPCB version.
* EESchema: update project library and path dialog to match changes to CVPCB version.
* EESchema: save vertical/horizontal line direction setting between sessions.

* All - add wxList implementation for dynamic declaration of application settings.
* EESchema: remove non-standard fonts and dialog button text colors from all UI controls.
* EESchema: update project file and application settings from static to dynamic method.
* EESchema: save and restore show hidden pins state between sessions.
* EESchema: global variable reductions.
* EESchema: use EVT_UPDATE_UI instead of SetToolbars() to set control states.
* EESchema: remove unused DialogBlocks BOM dialog project file.
* GerbView: remove non-standard fonts and dialog button text colors from all UI controls.
* GerbView: fix infinite loop when parsing RS274X aperture definitions with whitespace.
* GerbView: add file name to export to PCBNew select layer dialog.