Add option GWIN_BUTTON_LAZY_RELEASE

Add option GWIN_BUTTON_LAZY_RELEASE. When set to true in gfxconf.h it
changes gwin button behaviour to not require the mouse/touch be over the
button when it is released.
Merge pull request #36 from inmarket/master

Add option GWIN_BUTTON_LAZY_RELEASE
Merge pull request #37 from resset/master

SSD2119 display driver
TDISP update
ILI9320 update