Fixed bug 1214067 Alt+Shift+Click not displaying rectangular selection fully by setting rectangular range in mouse down processing. Hoisted this code into new method SetRectangularRange as used in 4 places.
Fixed bug 1214067 Alt+Shift+Click not displaying rectangular selection
fully by setting rectangular range in mouse down processing. Hoisted this
code into new method SetRectangularRange as used in 4 places.

keperlia/foo-wsh-panel-mod.scintilla,windoze/scintilla,keperlia/foo-wsh-panel-mod.scintilla,windoze/scintilla,keperlia/foo-wsh-panel-mod.scintilla,windoze/scintilla,windoze/scintilla,keperlia/foo-wsh-panel-mod.scintilla,windoze/scintilla,windoze/scintilla,windoze/scintilla,keperlia/foo-wsh-panel-mod.scintilla,windoze/scintilla,keperlia/foo-wsh-panel-mod.scintilla