possible fix for buffer overrun

```
Line 49 of procnamemodule.c line 49 is:

strncpy(argv[0], name , strlen(name));

For a really long name this risks overwriting other arguments. It seems
safer to do:

strncpy(argv[0], name , strlen(argv[0]));

```

Original issue reported on code.google.com by `hroeh...@gmail.com` on 10 Dec 2008 at 6:17
