Scripting engine build fix.

Eeschema: fix a *very subtle* bug noticeable only in complex hierachies, for multiple parts per package:
sometimes, the modified flag was set for these components just when switching from a sheet to an other sheet.
Pcbnew: fix Bug #1197414 (dragged track segments does not show clearance area)

Fixed drawing stroked semicircles using OpenGL backend.

This keeps it out of the KiCad mode path, making that leaner and less confusing about
what is supported in KiCad mode.  Within KiCad mode, treat quoted vs. non-quoted tokens
as the two general categories, with non-quoted having sub-categories.  Eliminate  
an unimplemented, unused function declaration in DSNLEXER.
 
Improve the output formatting of THROW_PARSE_ERROR().

in *.kicad_pcb file loading times.

Replace in EDA_TEXT::Draw the parameter EDA_DRAW_PANEL* aPanel  by EDA_RECT* aClipBox, which is the actual parameter used by Draw.
This change make more easy to  use this function when a EDA_DRAW_PANEL canvas is not used to draw texts.
Remove dead code in worksheet.cpp.

Add script to make a footprint library table from the KiCad Bazaar library repository, either in s-expr or CSV format.  Add also the generation of such tables as of today.

This is limited to round tripping the lines of commented text in the
loading and saving to disk through PCBIO::Format() and PCBIO::Parse().
No editing of the comments is given.

The bug was revealed on re-opening the saved version of a file imported by pcad2kicadpcb.

Pcbnew: netlist dialog: add silent mode option, and tool tip to the 2 options (dry run and silent mode)
dialog_display_info_HTML_base: derived now from dialog_shim.

Changed order of used headers, so there is no need to include again 'wx/wx.h' needed by layers_id_color_and_visibility.h

Bitmap2component: add export for .kicad_mod new footprint file format, and export polygon descr for page layout description (.kicad_wks file)

* Do not search for footprint when no footprint is defined for a component
  in the netlist.