iOS VM extra bluetooth keyboard support

 
I enclose a zip file with modification to SqueakUIView.h/m and SqueakUIController.m to enable the Cmd, Ctrl, Arrows and Cmd-. key combinations using a bluetooth keyboard, also using a shake to generate a Cmd-.

I am using (abusing?) the “approved” ways, and appears to be working OK, more testing specially with a Apple keyboard is needed, I only have a cheap keyboard made in Taiwan.

 
I am now enclosing a diff file with reference to branches/Cog as today, perhaps is more easy to integrate, this version add Cmd-arrows.

 
I am now enclosing a diff file with reference to branches/Cog as today, perhaps is more easy to integrate, this version add Cmd-arrows.