gen_gerber_and_drill_files_board.py:
* fix to make it compatible with rev 6280.
* allow this script to create files in the current plot folder defined from the board forder, no more only in current working directory.
reasons:
* This option is called "bad practice" in gerber files format specifications and is even forbidden in gerber drill files.
* Generates problems with some board makers because these holes are not identified in a single NC file.
* No one was able to explain us how to identified them in a single NC file.
* Recent change in drill file generation is not compatible with merged holes (minor reason)
Drill report: serious enhancements.
Plot files names for copper layers: build from the user layer name, like in bzr 4022 stable version. no change for other layers.
Pcbnew: Plot files: for copper layers, create suffix from user copper layer names instead of default copper layer names, like in last stable Kicad version (bzr 4022), to build the plot files filenames.
Better test of illegal chars in plot filename, both in plot dialog and functions aclled by Python scripts.
Fix a Plotcontroller issue to make SetUseGerberExtensions() work as expected from Python scripts ( from Henner Zeller'patch with a fix to be sure it works properly from a Python script)
Note also using Protel Gerber Extensions is now a bad practice, because the official Gerber extension is .gbr since X2 Gerber version. But some users still use them)
* The board ratsnest visibility state was being saved in both the board file
and the Pcbnew configuration files causing visibility state issues. Use the
board file to save the board ratsnest visibility state.
* Remove all of the board ratsnest save visibility state to configuration file
code.
* Add code to set the board modified property when layer visibility states
change to give the user a chance to save the state in the board file.
* Some minor code cleaning and coding policy fixes.
* Recognize values with units in more recent gEDA footprint files and scale accordingly.
* Join both parseInt() implementations. This should reduce rounding errors as well as
code duplication.
* Make the about dialog help string consistent across all menus.
* Improve print preview window and print initialization error messages.
* The usual smattering of coding policy fixes.
* Add skip event to notebook page changed event handler. Apparently OSX
updates the selected notebook page in this event instead of the page
changing event used on Window and Linux.
* Improve duplicate net class name error message.
* Use default dialog size to allow sizers to do their job.
* General layout and sizer improvements.
* Remove HTML message window which could not be used when error dialog was displayed.
* Use wxStdDialogButtonSizer for the OK and Cancel buttons.
* Check for design rule validity in TransferDataFromWindow() to prevent dialog from being
closed and all new design rules being lost when an error is detected. This gives the user a
chance to fix any design rules errors before dismissing the dialog.
* Add missing test for extra via drill diameter violations.
* Remove unnecessary OK and Cancel butten clicked event handlers.
* Coding policy fixes in the scripting initialization code missed in my previous commit.
* Remove redundant checks for valid Python library paths in kicadplugins.i.
* Actually install the contents of the pcbnew/scripting/plugins directory on
Windows and Linux
* Move the test for existence of a directory before adding it to the Python
system library paths when loading the Python plugins.