Instrumentation:
1) Improved handling of fork() by just shutting down threads and starting them again afterwards.
This allows to keep information through fork() in the parent.

2) Added checks for wrong dual instrumentation with wrap & dlsym.

3) Multiplexed network calls from POSIX into the "POSIX_Network" component. (Code in template for POSIX is ugly though).
Reporter: Allow to append pid to filename which is useful for multiple processes.
Merge branch 'master' of ssh://github.com/JulianKunkel/siox