native frameworks: 64-bit compile issues

- Fix format (print/scanf)
- Suppress unused argument warning messages (bonus)

Change-Id: I05c7724d2aba6da1e82a86000e11f3a8fef4e728
diff --git a/opengl/libagl/texture.cpp b/opengl/libagl/texture.cpp
index 08536df..9aa1c4f 100644
--- a/opengl/libagl/texture.cpp
+++ b/opengl/libagl/texture.cpp
@@ -1223,10 +1223,10 @@
 // ----------------------------------------------------------------------------
 
 void glCompressedTexSubImage2D(
-        GLenum target, GLint level, GLint xoffset,
-        GLint yoffset, GLsizei width, GLsizei height,
-        GLenum format, GLsizei imageSize,
-        const GLvoid *data)
+        GLenum /*target*/, GLint /*level*/, GLint /*xoffset*/,
+        GLint /*yoffset*/, GLsizei /*width*/, GLsizei /*height*/,
+        GLenum /*format*/, GLsizei /*imageSize*/,
+        const GLvoid* /*data*/)
 {
     ogles_context_t* c = ogles_context_t::get();
     ogles_error(c, GL_INVALID_ENUM);