Remove redundant sizers from environment variable dialog.
Improve sizers and layout spacing of environment variable and environ-
ment variable edit dialogs.
Remove path from dialog box titles since environment variables are not
limited to file paths.
Improved help messages for both environment variable and environment
variable edit dialogs.
Restore highlighting of externally defined environment variables.
Pcbnew: auxiliary axis shape: use the same look as GAL, to be consistent with GAL.
Minor change in dialog_env_var_config (use the wxStdDialogButtonSize for usual OK, Cancel and help buttons)
* Create new dialog to edit environment variables.
* Add helper class ENV_VAR_ITEM to manage environment variable values and
if they were defined externally.
* A path configuration dialog access to KiCad, CvPcb, Pcbnew, and Footprint Editor
window menus.
* Add validator for environment variables.
jean-pierre charras
Wayne Stambaugh
Wayne Stambaugh