- Update to version 1~20231228:
* ext_render_snorm-render: Fix deprecated-non-prototype warning
* version-mixing: Fix deprecated-non-prototype warning
* draw-prim-rate: test more varying counts
* glsl-1.10/built-in-uniform-state: don't test Infs due to undefined behavior
* arb_vertex_program/property-bindings: don't test Infs due to undefined behavior
* glsl-1.40: add a UBO test that I don't remember why I needed it
* glsl-1.10: test a smooth color input with glShadeModel(GL_FLAT)
* arb_fragment_layer_viewport: don't test out-of-range gl_Layer values
* ext_render_snorm-render: lower test ctx version requirement
* Implement piglit_subprocess for Windows
* modifiers: Make a single list of the known modifiers.
* modifiers: Allow specifying format and modifier
* modifiers: Improve the presentation of results
* modifiers: Add clear reimport subtest
* modifiers: Add stress subtest
* modifiers: Indent an inner loop
* modifiers: Try to autogenerate dmabufs
* framework: Add piglit_drm_create_dma_buf_modifiers
* framework: Add an n_planes field
* ext_image_dma_buf_import: Add a test for modifiers
* ext_image_dma_buf_import: Support non-external textures
* ext_image_dma_buf_import: Require GL_EXT_EGL_image_storage
* Import the drm_fourcc/drm.h header and use them.
* arb_tessellation_shader: Add new test tesslevels-indirect
* ext_image_dma_buf_import: add a multithread refcount test
* ext_image_dma_buf_import-export-tex: Print normal info to stdout, not stderr.
* arb_separate_shader_objects/atomic-counter: Add missing GLSL requirement.
* GL_ARB_arrays_of_arrays: Fix a missing extension requirement.
* arb_shader_texture_lod: Fix incorrect require directive for the ext.