fix author email (switch corporate to personal)
fix trailing whitespace
configurable nfqueue num
remove pidfile on exit

Also:
 signal handlers are set-up using pretty config array
 all variable declarations in main file became static
re-arrange lines in help message
support pidfile by init.d script
force using memmove instead of memcpy

libc memcpy implementations < 2.14 had a bug:
https://www.sourceware.org/bugzilla/show_bug.cgi?id=12518

That caused libc to bump symbol to memcpy@GLIBC_2.14.
Thus dpkg-shlibdeps generate very tight dependency.
Better not use memcpy at all to make package compatible
with old machine's libc6.
bugfix: crash on SIGHUP
reload rsyslog configuration after installation