Community Workspace/Tegra3/Nexus7/EGL NOK issues

According to IRC, "eglext-tests" package provides tests. At least the following extensions are missing according to the tests and claimed to be used somewhere in Mer or Nemo:
 * EGL_NOK_image_shared
 * EGL_NOK_swap_region2
 * EGL_KHR_lock_surface2

Qt5 doesn't seem to contain any EGL_NOK usage but Qt 4.8 does:

xxxx@yyyy:/tmp/qt-everywhere-opensource-src-4.8.4$ grep -nrI EGL_NOK_. ./src/opengl/qgl_egl.cpp:258:                   if (!QEgl::hasExtension("EGL_NOK_image_shared")) { ./src/opengl/qwindowsurface_gl.cpp:449:       haveNOKSwapRegion = QEgl::hasExtension("EGL_NOK_swap_region2"); ./src/opengl/qwindowsurface_gl.cpp:453:           qDebug << "Found EGL_NOK_swap_region2 extension. Using partial updates."; ./src/plugins/graphicssystems/meego/qmeegoextensions.cpp:89:       qFatal("EGL_NOK_image_shared not found but trying to use capability!"); ./src/plugins/graphicssystems/meego/qmeegoextensions.cpp:97:       qFatal("EGL_NOK_image_shared not found but trying to use capability!"); ./src/plugins/graphicssystems/meego/qmeegoextensions.cpp:105:       qFatal("EGL_NOK_image_shared not found but trying to use capability!"); ./src/plugins/graphicssystems/meego/qmeegoextensions.cpp:113:       qFatal("EGL_NOK_surface_scaling not found but trying to use capability!"); ./src/plugins/graphicssystems/meego/qmeegoextensions.cpp:173:   if (QEgl::hasExtension("EGL_NOK_image_shared")) { ./src/plugins/graphicssystems/meego/qmeegoextensions.cpp:174:       qDebug("MeegoGraphics: found EGL_NOK_image_shared"); ./src/plugins/graphicssystems/meego/qmeegoextensions.cpp:185:   if (QEgl::hasExtension("EGL_NOK_surface_scaling")) { ./src/plugins/graphicssystems/meego/qmeegoextensions.cpp:186:       qDebug("MeegoGraphics: found EGL_NOK_surface_scaling"); ./src/gui/egl/qegl.cpp:617:       if (QEgl::hasExtension("EGL_NOK_swap_region2")) { ./src/gui/egl/qegl.cpp:660:   qWarning("QEgl::eglSwapBuffersRegion2NOK called but EGL_NOK_swap_region2 extension not present");

These are printed by eglinfo as supported on Tegra3:
 * EGL_NV_system_time
 * EGL_KHR_config_attribs
 * EGL_KHR_surfaceless_context
 * EGL_KHR_image
 * EGL_KHR_image_base
 * EGL_KHR_image_pixmap
 * EGL_KHR_gl_texture_2D_image
 * EGL_KHR_gl_texture_cubemap_image
 * EGL_KHR_gl_renderbuffer_image
 * EGL_ANDROID_blob_cache
 * EGL_KHR_vg_parent_image
 * EGL_NV_perfmon
 * EGL_KHR_lock_surface
 * EGL_KHR_fence_sync
 * EGL_NV_sync
 * EGL_NV_depth_nonlinear
 * EGL_NV_post_sub_buffer
 * EGL_NV_post_convert_rounding
 * EGL_NV_native_query
 * EGL_KHR_stream
 * EGL_KHR_stream_fifo
 * EGL_KHR_stream_producer_eglsurface
 * EGL_KHR_stream_consumer_gltexture
 * EGL_KHR_stream_cross_process_fd
 * EGL_EXT_create_context_robustness
 * EGL_IMG_context_priority
 * EGL_NV_3dvision_surface
 * EGL_KHR_reusable_sync
 * EGL_NV_stream_sync
 * EGL_NV_coverage_sample
 * EGL_NV_coverage_sample_resolve