Updated boost::polygon from http://svn.boost.org/svn/boost/trunk/boost/polygon (boost 1.44) Seems fix some issues.

  * Now link with XML support within wxWidgets.
  * Start of export the generic netlist in XML.  Still need to rework the chain
    loaded netlist plugin.
  * OBJ_CMP_TO_LIST class now uses a std::string to hold the 8 bit string m_Ref,
    but hides this behind accessors which provide for both Unicode and 8 bit
    set and get functions.
  * build_BOM.cpp retains the selected filename on subsequent runs as a default.
  * Code cleaning, especially in build_BOM.cpp.

added " pcbnew module editor toolbar items now in menubar" patch from Jerry Jacobs. Fixed TODO, and some issues.
Fixed some minor translation issues (different help texts for the same command in tools and menus).
minor code cleaning.
fixed minor warnings in debug mode.

minor code cleaning. fixed minor warnings in debug mode.

Fixed some issues with wxWidgets 2.9.1 (fixed Gerbview and Pcbnew crashes under Linux when starting. Could explain also crashes under MACOSX)
Code cleaning.
pcbnew:
    Added experimental zone fill calculations with boost::polygon
    old file zones_convert_brd_items_to_polygons.cpp has now 2 versions:
    zones_convert_brd_items_to_polygons_with_Boost.cpp use boost::polygon to calculate filled areas
    zones_convert_brd_items_to_polygons_with_BKbool.cpp use kbool (code cleaned).
    >>> to use boost polygon version:
        call cmake with option: -DUSE_BOOST_POLYGON_LIBRARY=ON
Eeschema: added patches from Yuri Khalyavin

Added boost::polygon (experimental)
Added experimental zone fill calculations with boost::polygon
Added patches from Yury Khalyavin

finished replacement of Get_Message (not very useful) by wxTextEntryDialog

finished replacement of Get_Message (not very useful) by wxTextEntryDialog

item.

Fixed compil warning under wxWidgets 2.9.1.
File beautification
Statring using wxTextEntryDialog instead of Get_Message (because Get_Message does not handle properly cancel option)

/pcbnew/class_netclass.cpp:324
eeschema/class_sch_component.cpp:933

Fixed a minor issue when creating a netlist: for nets having global labels, global label names were ignored when searching a name for this net.

Fixed a minor issue when creating a netlist. for nets having global labels, global label names were ignored when naming this net.

Pcbnew:   Added grid origin patch from Lorenzo Marcantonio.   Converted set grid dialog from DialogBlocks to wxFormBuilder,  and added in this dialog the grid origin parameters settings.

Pcbnew:   Added grid origin patch from Lorenzo Marcantonio.   Converted set grid dialog from DialogBlocks to wxFormBuilder,  and added in this dialog the grid origin parameters settings.

dixed very minor compil warnings