thirdparty: Move to top dir.
egl/gles1: Remove clear test.

Redundant.
apps/egl/gles1: Port debug_marker test.  Cleanup.
egl/gles2: Port to GLFW.
tracematch: Improve error reporting.
apps/egl/gl: Port to GLFW.
apps/gl: Port to GLFW.
apps/egl: Improve ref traces.
apps/gl: Automate exception test.
Add helper script to update *.ref.txt