add private library info to forensics file

_From [bruen...@google.com](https://code.google.com/u/109494838902877177630/) on November 08, 2012 12:50:08_

in issue #968 we decided to include full paths, which means not all the private
libraries are guaranteed to fit in the notify() message. thus we should
have complete information in the forensics file so we can use -diagnostics
and have all the info.

_Original issue: http://code.google.com/p/dynamorio/issues/detail?id=972_