Move names_to_pid from pending to lib.
Regression test against Ancient Build Environment (Ubuntu 8.04), fixup bit-rot.
toynet.h went away, missed a file...
Only define MNT_DETACH for old glibc, portability.h included _before_ sys/mount.h...
Older python spit --version to stdout, 2.7 does it to stderr. Of course.
Don't permute toys.optargs, cleanup code (xexec()) can free it.
killall: fix return code, improve error reporting, avoid buffer overflow.
Cleanup su.
Promote su from pending to lsb.
Add -s option, allow zero optargs for -l. (Suggested by Ashwini Sharma.)
Ashwini sharma pointed out that show_help() doesn't exit so "ifconfig eth0 netmask" would segfault. Replace it with an error_exit(), see list for aesthetic issue this raises re: help text.