* Fix creation of single app bundle with respect to scripting support.
* Cleanup scripting search paths for OSX.
* Fix some small CMake bugs from previous OSX build change.
* Optimize bundle file structure to be consistent with Apple specs.
* Add helper script for compiling wxWidgets and wxPython
* Update OSX build instructions.

Fix dialog title to be "Electrical Rules Checker" to match everywhere else.
Fix all usages of "Erc" to "ERC" consistently.
Move action buttons to bottom of dialog, make Del Markers actually say Delete Markers.
Add tooltips to ERC options matrix buttons to indicate what their current state is, for newb friendliness.
Cleanup ERC options code that for some reason decided to delete the button and recreate it instead of just updating it's bitmap directly.
Rename "Test Erc" to "Run" because you are running ERC and not testing it.
Fix improper usage of SetLabel on a wxTextCtrl instead of SetValue so the ERC totals now work!

Cleaning 3 svg files (no icon change)
Very minor other changes.

* Compile all binaries into a single application bundle.
* Use CMake BundleUtilities to make application bundle relocatable.
* Restructure build output to directly create an image file.
* Fix default search paths.
* Set KIGITHUB environment variable.
* Added patch to fix wxWidgets so names for OSX.

Update clipper version to 6.1.3a.

fix recent bug which prevent eeschema to save color preferences.
fix few other minor issues.

Minor other fixes.

Minor fixes: specctra export: skip malformed circles (having a radius = 0)  in board outline creation, which can crash 3d-viewer or vrml export.
dialog_fp_lib_table: remember during a session the last open table (global or local).
drawing_tool: fix compil warning
Update demos.

IO_MGR::PCB_FILE_T IO_MGR::GuessPluginTypeFromLibPath() : better test for KICAD type footprint libraries: previoulsy, just test if a library name ends with .pretty, which is not enough.
GitHub lib names also ends  by .pretty, so also test if a lib name does not start by http (which could be a GitHub lib name).

Eeschema: back to KICAD_KEEPCASE option, to find parts in lib, when using case sensitive option (default).
Schematic component properties dialog: add 2 helper buttons to manage the chip name (name of the corresponding part in lib)
- a browse button to chose an other chip name
- a test button, to know if the part exists. If not existing, list the parts found when searching using a case insensitive comparison.

Kicad manager: fix an issue when starting eeschema from its button: if the library editor was previously running, and if the quasimodal field editor dialog was called, eeschema dis not start on Windows, or started but dis not load the schematic project on Linux.
Enhancement: if a tool is running but is iconized, clicking on its button bring the window on screen.

Eeschema: remove the compil option KICAD_KEEPCASE. Eeschema is now always case sensitive when seraching components in libs.
However to be compatible with old versions of Eeschema, when a search in library fails, a case insensitive search is made.
Therefore, this version should be compatible with sch files created by previous Eeschema versions compiled with KICAD_KEEPCASE = OFF

Factored out text ellipsing support to max 15 character (for generating menu items)

Eeschema: schematic libraries in a sub path of standard libraries paths are now better handled.

* Add hot key handled return indicator to DRAW_FRAME::GeneralControl() and
  DRAW_FRAME::OnHotKey() and all classed derived from DRAW_FRAME.
* Add code to all GeneralControl() and OnHotKey() functions to return true if
  hot key was handled.
* Call event skip in DRAW_PANEL::OnKeyEvent() when key event is not handled to
  allow default menu event handler to function properly.

All: Fix crash on close Kicad, when a quasi modal dialog is open, and Kicad is closed from the Kicad project manager.

*  Fix Eeschema back annotation bug where footprint field visibility setting was ignored.
*  Replace two confusing and ambiguous dialogs with a simple single choice dialog.

Pcbnew, Eeschema: release lock file when these editors are closed (Until now, the lock file was released when the full Kicad application was closed, not when the editor was closed).
Should fix Bug #1360470  and Bug #1359502 .

Eeschema: add dialog libedit options and move options relative to libedit from eeschema options to this dialog.
Ensure some values initialized by the schematic editor and used by libedit are also initialized in libedit even if  the schematic editor was not started.
Remove useless commands (save/load project config) in libedit, because now they have no sense.

.pro file: Settings for schematic editor and library list are now stored in 2 independant sections [schematic_editor] and [eeschema].
This fixes Bug #1360219 (Lost settings in eeschema) and keep separation between code relative to lib management and code relative to preferences.
2 or 3 minor settings could be lost in some designs, but they are very easy to reenter.

* Refresh canvas when user cancels edits so that the discarded sheet is
  cleared from the schematic.
* Add file name validation to the sheet properties dialog to prevent
  illegal file name characters from being entered into the text control.
* Rename FOOTPRINT_NAME_VALIDATOR to FILE_NAME_CHAR_VALIDATOR for clarity.

* Use clockwise and counterclockwise in menu strings which is less ambiguous than + and -.
* Moved the rotate hot key R to the rotate clockwise menu entry string.

* Patch Boost interlocked.hpp from version 1.56.
* Fix segfault in Eeschema when auto save event occurs before root sheet is initialized.
* Add assertion when SCH_SHEET_PATH::BuildSheetList is called with NULL pointer.

Eeschema: Fix some issues (all connections showed as not connected, DRC and NETLIST errors if all sheets in a hierarchy were not open) due to the fact the pointer of a schematic component to its part lib was calculated too late (or never calculated).