Skipped syscalls

[mrsmkl]

These are the syscalls that should not be implemented, the output from recorded system calls can be used instead.
20. Getpid: skip
55. Setpgid: skip
64. Getpid: skip
65. Getpgrp: skip
77. Getrusage: skip
102. Socketcall: skip?
122. Uname: skip?
132. Getpgid: skip
147. Getsid: skip
191. Ugetrlimit: skip
195. Stat64: skip?
196. Lstat64: skip?
197. Fstat64: skip?
205. Getgroups32: skip
208, 210. Setresuid32, setresguid32: skip
209, 211. Getresuid, getresgid: skip
268. Statfs64: skip?
269. Fstatfs64: skip?
300. Fstatat: skip?
340. Prlimit64: skip
320. Utimensat: skip

But for example in stat, we should perhaps check that the file exists, and has correct size.