Remove Qt SVG and Qt OpenGL as hard dependencies
Qt SVG is not used in the frontend (no SVGs are rendered).
Neither is Qt OpenGL used. Qt OpenGL is discouraged anyway.
// IDecl.h
#ifndef __IDECL_H
#define __IDECL_H
#include "../Common/MyUnknown.h"
#define DECL_INTERFACE_SUB(i, base, groupId, subId) \
DEFINE_GUID(IID_ ## i, \
0x23170F69, 0x40C1, 0x278A, 0, 0, 0, (groupId), 0, (subId), 0, 0); \
struct i: public base
#define DECL_INTERFACE(i, groupId, subId) DECL_INTERFACE_SUB(i, IUnknown, groupId, subId)
#endif