Numarit now runs in Windows 7

Numarin, Nmplot and Nmmix already worked in 64-bit Windows 7, as did the Windows shell of Numtrun.  However, calculations using Numtrun failed because the programs it called were 16-bit DOS applications, which are no longer supported by Windows.  Now, in Version 2, these programs, Numarit, Pluscc and Numprned have been translated and compiled in Fortran 90 for Windows, so that the whole package runs in Windows 7 just as well as it does in Windows XP or earlier, as far back as Windows 95