illumos gate

There are few minor issues in the ::help mblk:

1. The addr is optional, so there should be [ addr ] in synopsis
2. There is missing -G in synopsis
3. There is -B (uppercase) in synopsis, but -b (lowercase) in description
4. There is one more tab in the -d dbaddr option description

SYNOPSIS
  addr ::mblk [-q|v] [-f|F flag] [-t|T type] [-l|L|B len] [-d dbaddr]

DESCRIPTION

  Print mblock information for a given mblk pointer.
  Without the address, print information about all mblocks.

  Fields printed:
        ADDR:   mblk address
        FL:     Flags
        TYPE:   Type of corresponding dblock
        LEN:    Data length as b_wptr - b_rptr
        BLEN:   Dblock space as db_lim - db_base
        RPTR:   Read pointer
        DBLK:   Dblock pointer

  Options:
        -v:             be verbose - print symbolic flags falues
        -q:             be quiet - print mblk pointer only
        -d dbaddr:              print mblks with specified dblk address
        -f flag:        print only mblks with flag set
        -F flag:        print only mblks with flag NOT set
        -t type:        print only mblks of specified db_type
        -T type:        print only mblks other then the specified db_type
        -l len:         tprint only mblks with MBLKL == len
        -L len:         print only mblks with MBLKL <= len 
        -G len:         print only mblks with MBLKL >= len 
        -b len:         print only mblks with db_lim - db_base == len