Eeschema: fix an old bug: sometimes E hotkey (and some other' hot keys)  was editing a previously selected item, not the item under the mouse cursor
Templates: remove useless backup files

switch from STREAM_OUTPUTFORMATTER to FILE_OUTPUTFORMATTER mostly throughout,and minor richio factoring

Minor enhancement in popup menus for wire and bus.
Kicad: stm32f0discovery template: very minor fix.

fctsys.h: remove useless define.
Fix minor issues and add minor enhancements.

Eeschema: always stores sheet filename in unix-like notation, and fix a  bug when editing sheet file  name.
Pcbnew: add PDF format  for drill map generation.
Plotter classes: tweaking code.

All: remove macros  MAX, MIN, ABS from macros.h and replace these macros by std::max, std::min and std::abs (mainly found in old code).

SVG plotter: fix issues in draw arc and draw rectangle.

Eeschema: Plot dialogs: unify 5 dialogs (which means 5 duplicate code) to only one plot dialog (like in Pcbnew)
clean duplicate code.
Simplify HPGL dialog: plot offet removed and replace by only one option (plot origin to center of sheet or not)
This is surely enought.

Mainly to plot drill maps, but can be used to plot boards, for documentation.
The print svg still exists, but the plot SVG has more options (mirroring, holes in pads),
however  print svg allows color print, and full board printing, and plot does not.

Other minor fixes.

Code cleaning, minor fixes and minor coding style fixes. wxWidgets 2.9.4 compatibility fix( deprecated function MakeModal )

Pcbnew: cleanup functions: now, cleanup uses same algorithm as connectivity calculations to detect pads connections, and is faster.
therefore tracks which have a end point inside a pad, but not necessaryexactly  to the pad position are seen as connected, and are no more removed.
Side effect: reconnect to pads option is removed, because it is useless.
TODO: use this algorithm in drag functions.
Minor other fixes

apply DIALOG_SHIM to dialog_lib_edit_text_base and make dialog_lib_edit_pin_base apportion more width for pin name

dialog plot functions: fix compil warnings with wxWidgets 2.8

Kicad manager: shows now svg files in tree files.
Pcbnew: fix incorrect printing (board out of page) when creating drill map in postscript format ( noticeable mainly for small boards)

  *  serious code cleanup (remove duplicate code)
  *  shows (option in 3D preference menu) the copper items (tracks, zones...)  in 3D, using 35 microns copper thickness.
      However, because there are a lot more3D data to show (roughly 4 times more), this is slower.

where the 'z' prefix is for size_t arguments.

*) minor beautification

Eeschema: annotate and netlist dialogs: enhancements.
Minor  coding policy fixes and  changes.

All: press ctrl+shift key when moving the mouse allows the graphic cursor to be moved outside the grid.
(useful to place graphic objects, texts in any position, regardless the current grid)