Fixed link time warnings on MacOS

MacOS' linker dislikes local static variables that are used
in two separate libraries. Removing them from the header files
fixes all the warnings.

Bug b/chromium:907088

Change-Id: I7b8ed44bf9a3180489a7407980740fd3f3863046
Reviewed-on: https://swiftshader-review.googlesource.com/c/22889
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/OpenGL/libGLES_CM/Android.mk b/src/OpenGL/libGLES_CM/Android.mk
index 9b00f42..6240d5d 100644
--- a/src/OpenGL/libGLES_CM/Android.mk
+++ b/src/OpenGL/libGLES_CM/Android.mk
@@ -44,7 +44,8 @@
 	ResourceManager.cpp \
 	Texture.cpp \
 	utilities.cpp \
-	VertexDataManager.cpp
+	VertexDataManager.cpp \
+	../../Common/SharedLibrary.cpp
 
 COMMON_C_INCLUDES := \
 	bionic \