This package contains GNU Pth 2.0.7 from 
http://www.gnu.org/software/pth/

Pth is a very portable POSIX/ANSI-C based library for Unix platforms 
which provides non-preemptive priority-based scheduling for multiple 
threads of execution (aka ``multithreading'') inside event-driven 
applications. All threads run in the same address space of the server 
application, but each thread has it's own individual program-counter, 
run-time stack, signal mask and errno variable.