Code reorganization: update build.
Update the Makefiles and includes for the new paths.
Note that there hasn't been no separation of the Makefiles yet, and make is
jumping all over the place. That will be taken care shortly. But for now, make
should work. It was tested with linux and linux-dri. Linux-cell and linux-llvm
might require some minor tweaks.
diff --git a/configs/linux-osmesa b/configs/linux-osmesa
index cc1fbbd..0382a19 100644
--- a/configs/linux-osmesa
+++ b/configs/linux-osmesa
@@ -14,7 +14,7 @@
# Directories
-SRC_DIRS = mesa glu
+SRC_DIRS = gallium mesa glu
DRIVER_DIRS = osmesa
PROGRAM_DIRS = osdemos