Switch back to forked astc-ecnoder repo for now.

akb825 · akb825 · commit 6837a85a1c8d · 2018-04-14T15:05:09.000-07:00
Still requires some modifications to build on Windows. Hopefully the pull
request will be accepted, in which case it can be switched back to
upstream.
diff --git a/.gitmodules b/.gitmodules
@@ -9,7 +9,7 @@
 	url = https://github.com/google/etc2comp.git
 [submodule "lib/astc-encoder"]
 	path = lib/astc-encoder
-	url = https://github.com/ARM-software/astc-encoder.git
+	url = https://github.com/akb825/astc-encoder.git
 [submodule "lib/glm"]
 	path = lib/glm
 	url = https://github.com/g-truc/glm
diff --git a/lib/astc-encoder b/lib/astc-encoder
@@ -1 +1 @@
-Subproject commit a47b80f081f10c43d96bd10bcb713c71708041b9
+Subproject commit 4a4392d81417761a6da5672bbb259cb8fd413df8
