Added ToBoolean to GLCommands.c
Added ToBoolean to GLCommands.c

Converts the CLIPS boolean value to the GLboolean type.

DrItanium/electron,DrItanium/electron,DrItanium/AdventureEngine,DrItanium/electron-platform,DrItanium/electron-platform,DrItanium/AdventureEngine,DrItanium/electron-platform,DrItanium/electron,DrItanium/neutron