latest extensions and updates
diff --git a/docs/RELNOTES-5.1 b/docs/RELNOTES-5.1
index 3c7451c..d720ba8 100644
--- a/docs/RELNOTES-5.1
+++ b/docs/RELNOTES-5.1
@@ -66,6 +66,14 @@
GL_ARB_texture_non_power_of_two
Removes the restriction that texture dimensions must be powers of two.
+GL_IBM_multimode_draw_arrays
+ Allows multiple vertex arrays to be drawn with one call, including arrays
+ of different types of primitives.
+
+GL_SUN_multi_draw_arrays
+ An alias for GL_EXT_multi_draw_arrays, standard in OpenGL 1.4.
+
+
Build System Changes
--------------------
@@ -78,6 +86,25 @@
Improvements/contributes are greatly appreciated.
3. The Makefile.X11 files have been cleaned up in various ways
+The GNU automake/autoconf support has been removed. As it was, it seldom
+worked on anything but Linux. The Mesa developers aren't big fans of
+automake/autoconf and didn't have the time to maintain it. If someone
+wants to contribute new automake/autoconf support (and is willing to
+maintain it), it may be re-incorporated into Mesa.
+
+
+
+Directory tree reorganization
+-----------------------------
+
+The directory structure for Mesa has been overhauled to improve its layout.
+All source code for Mesa, GLU, GLUT, etc is now under the src/ directory
+in appropriate subdirectories.
+
+The Mesa source code and drivers has been reorganized under src/mesa/.
+
+All demonstration programs and test are now in subdirectories under progs/.
+
Source File Changes