. prevents zombies from accumulating for as long as tcpd exists
for child processes that create their own process group, e.g. ftpd.
Change-Id: Ic56597810f7d17e1cc28b755e2d1998ecf49a27c
Fix warnings about:
. Unused variables
. format mismatch in printf/scanf format string and arguments
. Missing parenthesis around assignment as truth values
. Clang warnings anout unknown GCC pragma
