Cleaned up eglbringuptest code
- Refactored CEGLRendering construction to separate EGL and VG setup
- Consistently check EGL and VG errors after each API call
- Standardised RDebug::Printf statements to all start with [EBT]
- Removed unused libraries from MMP file
- Removed unused openvgengine.h
- Removed various unused member variables
- Removed unused CWsCanvas class
# OpenWF Conformance Tests run under testexecute
TESTEXECUTE, \logs\testexecute\ct_api.htm, , z:\wfctest\ct_api.script, 800
TESTEXECUTE, \logs\testexecute\ct_offscreen.htm, , z:\wfctest\ct_offscreen.script, 3000
TESTEXECUTE, \logs\testexecute\ct_onscreen.htm, , z:\wfctest\ct_onscreen.script, 3000
TESTEXECUTE, \logs\testexecute\ct_onscreenstress.htm, , z:\wfctest\ct_onscreenstress.script, 3000
TESTEXECUTE, \logs\testexecute\ct_offdevice_hw.htm, , z:\wfctest\ct_offdevice_hw.script, 8400