apply work-a-round for syborg graphics to symbian^4 branch, part of fixes described in Bug 2339
[QueryString_Extensions_tb92]
CountExtensionsEGL=2
ExtensionEGL0=EGL_NOK__private__signal_sync
ExtensionEGL1=EGL_KHR_reusable_sync
CountExtensionsVG=0
[QueryString_Extensions]
CountExtensionsEGL=2
ExtensionEGL0=EGL_NOK__private__signal_sync
ExtensionEGL1=EGL_KHR_reusable_sync
CountExtensionsVG=0