- n_glesv1_cm-glesv2.patch
* reenables build of GLESv1_CM and GLESv2 ...
- readded pkgconfig files for GLESv1_CM and GLESv2 to filelists
- removed again virtual provides for
* pkgconfig(glesv1_cm)
* pkgconfig(glesv2)

- reenable LTO with Mesa 19.1 (boo#1133265, comment#5)
- enabled new gallium drivers
* iris (newer Intel GPUs)
* lima, panfrost on ARM64
- virtually provide
* pkgconfig(glesv1_cm)
* pkgconfig(glesv2)
in libGLESv1_CM-devel/libGLESv2-devel packages, since these files
have been removed from Mesa via git commit #1587586

- Update to 19.1.0:
* Mesa 19.1.0 implements the OpenGL 4.5 API, but the version
reported by glGetString(GL_VERSION) or
glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular
driver being used. Some drivers don't support all the features
required in OpenGL 4.5. OpenGL 4.5 is only available if
requested at context creation. Compatibility contexts may
report a lower version depending on each driver.
* The top highlights include:
- GL_ARB_parallel_shader_compile for all drivers.
- GL_EXT_gpu_shader4 on all GL 3.1 drivers.
- GL_EXT_shader_image_load_formatted on radeonsi.
- GL_EXT_texture_buffer_object on all GL 3.1 drivers.
- GL_EXT_texture_compression_s3tc_srgb on Gallium and i965
drivers (ES extension).
- GL_NV_compute_shader_derivatives on Iris and i965 drivers.
- GL_KHR_parallel_shader_compile on all drivers.
- GL_INTEL_conservative_rasterization on Iris.
- Refresh patches with quilt.
- Clean-up spec files for .pc and other files no longer built.