illumos gate

It'd nice if webrev could prepend revision number to the comments for each file.

For example, the comment section from a webrev contains comments from multiple revisions:

Cdiffs Udiffs Wdiffs Sdiffs Frames Old New Patch Raw usr/src/lib/libipsecutil/common/ipsec_util.c

    6520458 ikeadm should have command line history capabilities
    4313953 ipseckey(1m) needs line editing support.
    add match function pointer to do_interactive()
    no newline with Ctrl-D in interactive mode
    better signal handling (still needs more work in restore)
    4K characters should be enough for everyone (tm)
    bail out on GLR_ERROR
    nits
    bump IBUF_SIZE and issue just warning in case of line overflow
    move comment