Split massive CModHandler class/file into multiple parts:

- IdentifierStorage is now a separate handler in VLC
- Renamed ModHandler::Incompatibility exception to ModIncompatibility
- Extracted ModScope namespace from ModHandler
- Extracted ModUtilities namespace from ModHandler
- Split CModHandler.cpp on per-class basis
- Replaced some direct members with unique_ptr to reduce header includes

lib/modding/CModVersion.h

@@ -10,6 +10,12 @@
 
 #pragma once
 
+#ifdef __UCLIBC__
+#undef major
+#undef minor
+#undef patch
+#endif
+
 VCMI_LIB_NAMESPACE_BEGIN
 
 struct DLL_LINKAGE CModVersion