Implement additional flags for professional use

[JakWai01]

Needs to be implemented

• Implement -ff
• Implement -x
• Implement -xx
• Implement -yy
• Try to increase precision of wall clock time

Further information

Source: https://news.ycombinator.com/item?id=32275902

Heavy professional strace user here. Afaics the wall clock time of the call is not implemented. This is effectively useless to me without that. The second -ff is critical for following busy multiprocess stuff like a JVM. If you aren't resolving every known struct then -x and -xx can be useful. The FD resolution provided by -yy is not critical but can be a real time saver. The flags I use most often are -ffttTyy -o -s.