Forced the branch version on some of the submodules.

.gitmodules

@@ -1,17 +1,19 @@
 [submodule "extern/openal-soft"]
 	path = extern/openal-soft
 	url = https://github.com/kcat/openal-soft.git
+	branch = openal-soft-1.19.1
 [submodule "extern/openvr"]
 	path = extern/openvr
 	url = https://github.com/ValveSoftware/openvr.git
-	branch = v1.3.22
+	branch = v.1.6.10b
 [submodule "extern/googletest"]
 	path = extern/googletest
 	url = https://github.com/google/googletest.git
+	branch = release-1.8.0-2745-ge2239ee6
 [submodule "extern/glfw"]
 	path = extern/glfw
 	url = https://github.com/glfw/glfw.git
-	branch = 3.3.2
+	branch = 3.2.1-633-g53c8c72c
 [submodule "extern/bgfx/bgfx"]
 	path = extern/bgfx/bgfx
 	url = https://github.com/bkaradzic/bgfx
@@ -27,9 +29,12 @@
 [submodule "extern/recastnavigation"]
 	path = extern/recastnavigation
 	url = https://github.com/recastnavigation/recastnavigation.git
+	branch = 1.5.0-117-g57610fa
 [submodule "extern/meshoptimizer"]
 	path = extern/meshoptimizer
 	url = https://github.com/zeux/meshoptimizer.git
+	branch = v0.14-99-ge1edf79
 [submodule "tools/assimp_converter/assimp"]
 	path = tools/assimp_converter/assimp
 	url = https://github.com/assimp/assimp
+	branch = Release3.1_RC1-8389-gc1120a4c0