Added support to resolve demangled names found in HexRays output

[oopsmishap]

Certain names like __security_check_cookie are using a weird state of demangling where the visible name is not the real name.

void __fastcall __security_check_cookie(uintptr_t StackCookie)
{
  if ( StackCookie != __security_cookie )
    __report_gsfailure();
}

idaapi.get_name_ea(0, '__security_check_cookie')  # Returns BADADDR
idaapi.get_name_ea(0, '@__security_check_cookie@4')  # Returns address

Simple solution is to create a map of the demangled named, MNG_NODEFINIT allows us to do this as this is the flags used in Hexrays (despite it having the longest comment saying not to use it)

#define MNG_NODEFINIT    0x00000008 // Inhibit everything except the main name
                                                                  // This flag is not recommended
                                                                  // for __fastcall/__stdcall GCC3 names
                                                                  // because there is a high probablity of
                                                                  // incorrect demangling. Use it only when
                                                                  // you are sure that the input is a
                                                                  // cygwin/mingw function name