glew: Initial import.

From glew 1.5.1 release.
diff --git a/configs/linux-fbdev b/configs/linux-fbdev
index f54c736..0b03c33 100644
--- a/configs/linux-fbdev
+++ b/configs/linux-fbdev
@@ -9,7 +9,7 @@
 # Work around aliasing bugs - developers should comment this out
 CFLAGS += -fno-strict-aliasing
 
-SRC_DIRS = gallium mesa glu glut/fbdev
+SRC_DIRS = gallium mesa glu glut/fbdev glew
 DRIVER_DIRS = fbdev osmesa
 PROGRAM_DIRS = fbdev demos redbook samples