docs: update relnotes-7.11

docs/relnotes-7.11.html

@@ -44,6 +44,8 @@ tbd
 <li>GL_ARB_occlusion_query2 (gallium drivers, swrast)
 <li>GL_ARB_robustness (all drivers)
 <li>GL_ARB_sampler_objects (gallium drivers)
+<li>GL_ARB_seamless_cube_map (gallium r600)
+<li>GL_ARB_sync (gallium drivers only, intel support was in 7.6)
 <li>GL_ARB_texture_compression_rgtc (gallium drivers, swrast, i965)
 <li>GL_ARB_texture_float (gallium, i965)
 <li>GL_EXT_packed_float (gallium r600)
@@ -52,6 +54,9 @@ tbd
 <li>GL_EXT_texture_shared_exponent (gallium drivers, swrast)
 <li>GL_EXT_texture_sRGB_decode (gallium drivers, swrast, i965)
 <li>GL_EXT_texture_snorm (gallium drivers)
+<li>GL_AMD_draw_buffers_blend (alias of the ARB variant)
+<li>GL_AMD_seamless_cubemap_per_texture (gallium r600)
+<li>GL_AMD_shader_stencil_export (alias of the ARB variant)
 <li>GL_ATI_draw_buffers (all drivers)
 <li>GL_ATI_texture_compression_3dc (gallium drivers, swrast)
 <li>GL_ATI_texture_float (gallium, i965)