Merge fixes for bugs 1362, 1666, 1863, KhronosRI and bld.inf.
[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