VideoOGL: reinitialize some more global variables,

so VideoOGL always is in the same state when starting a guest program.

Also constify the RasterFont, while we are at it.


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7166 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_VideoOGL/Src/NativeVertexFormat.cpp

@@ -104,6 +104,8 @@ inline GLuint VarToGL(VarType t)
 
 void GLVertexFormat::Initialize(const PortableVertexDeclaration &_vtx_decl)
 {
+	s_prevcomponents = 0;
+
 	vertex_stride = _vtx_decl.stride;
 	using namespace Gen;