properly target windows 2000 in mingw build + allows to build for windows ME now as well

inc/dd.h

@@ -64,6 +64,18 @@ HRESULT dd_CreateEx(GUID* lpGuid, LPVOID* lplpDD, REFIID iid, IUnknown* pUnkOute
 #define CREATE_WAITABLE_TIMER_MANUAL_RESET 0x00000001
 #endif
 
+#ifndef GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT
+#define GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT 0x00000002
+#endif
+
+#ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
+#define GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 0x00000004
+#endif
+
+#if (_WIN32_WINNT < _WIN32_WINNT_WIN2K)
+#define GdiTransparentBlt TransparentBlt 
+#endif
+
 typedef struct SPEEDLIMITER
 {
     DWORD tick_length;

inc/versionhelpers.h

@@ -28,6 +28,11 @@
 #define _WIN32_WINNT_WIN11                  0x0A00
 #endif
 
+#if (_WIN32_WINNT < _WIN32_WINNT_WIN2K)
+#define RtlVerifyVersionInfo(a,b,c) 1
+#define VerifyVersionInfoW(a,b,c) 0 
+#define VerSetConditionMask(a,b,c) 0
+#endif
 
 void verhelp_init();
 BOOL verhelp_verify_version(PRTL_OSVERSIONINFOEXW versionInfo, ULONG typeMask, ULONGLONG conditionMask);