Added function "GetBinName" to CovPType

Hi Sebastian,

I can add that capability in the next release.  

I note that in your code, you never deallocate buf and as a result have a memory leak.  You can fix this by simplifying your code to:

impure function GetBinName ( BinIndex : integer ) return string is
begin
  if CovBinPtr(BinIndex).Name.all /= "" then
    return CovBinPtr(BinIndex).Name.all) ;
  else
    return "Nameless Bin" ;
  end if;
end function GetBinName;

To be consistent with other OSVVM implementations, I will implement  something like the following:

impure function GetBinName ( BinIndex : integer; DefaultName : string := "" ) return string is
begin
  if CovBinPtr(BinIndex).Name.all /= "" then
    return CovBinPtr(BinIndex).Name.all) ;
  else
    return DefaultName ;
  end if;
end function GetBinName;

Cheers,
Jim