Board is cached in GAL only when the canvas is activated.

Items that may be modified using EDIT_POINTs used to stay selected after pressing ESC (only EDIT_POINTs got away) - fixed.

Edit->Global Deletions & Edit->Cleanup Tracks and Vias work in GAL, without toggling between canvases.

Renamed [class_]drawpanel_gal.[cpp|h] to [class_]draw_panel_gal.[cpp|h] to follow current naming scheme.

Added possibility of switching tools by the right toolbar buttons, without deactivating the current tool first (previously tools did not switch if there was one active).

Cmakefiles: do not create map files on Windows, because creating map file generates hundred of useless warnings.
In PATCH_COMMAND, use patch instead of bzr patch if patch or patch.exe is found (mandatory to build Kicad on msys2 because 'bzr patch' does not work when using msys2)

Cmakefiles: do not create map file on Windows, because creating map file generates hundred of useless wranings.
In PATCH_COMMAND, use patch instead of bzr patch if patch or patch.exe is found (mandatory to use msys2 because bzr patch does not work when using msys2)