Add support for keyEventToString and also the ability to convert a keysym string into a keycode.
Add support for keyEventToString and also the ability to convert
a keysym string into a keycode.

pvagner/orca,h4ck3rm1k3/orca-sonar,h4ck3rm1k3/orca-sonar,GNOME/orca,GNOME/orca,GNOME/orca,chrys87/orca-beep,pvagner/orca,chrys87/orca-beep,pvagner/orca,chrys87/orca-beep,chrys87/orca-beep,GNOME/orca,pvagner/orca,h4ck3rm1k3/orca-sonar