syscalls: Generate protos for linux 3.2.60, Debian Wheezy.
syscalls: Add hacked-up return address computation for Linux
Make syscalls.cpp depend on syscalls.hpp.
syscalls: Fix generated code inclusion.

Add makefile rules to generate the generated code from included-in-git
prototype lists. Add generated stuff to .gitignore.
fdtracker: Label different reads differently.
syscalls: Fix Makefile dependencies.