Kayak for ISO.
Starting with this commit, "gmake install-usb" will build the entire Kayak
world, both for PXE boot and for USB/ISO installers as well.
The CDDL license text and copyrights for OmniTI-original code are now
updated, too.
Additionally, there are files now present to allow pxeboot (Loader's PXE
booter) instead of pxegrub (GRUB's PXE booter).
Some portions Reviewed by: Lauri Tirkkonen <lotheac@iki.fi>

*** 7,29 ****
   * Set PKGURL to be the source of the OmniOS bits we wish to install with
     kayak, in case it's not the default "omnios" publisher for whatever release
     branch you have checked out.
  
   * zfs create rpool/kayak_image
!  * gmake BUILDSEND=rpool/kayak_image
  
  Operation
  ---------
  
  DHCP server:
   * your server should be set to PXE boot
   * the DHCP server must return and IP, a nextserver and a bootfile
!  * the boot file should be the file {{{/boot/grub/pxegrub}}} from an existing OmniOS system
  
  TFTP server:
!  * menu.lst.01<macaddr_just_hex_caps> based on the template provided in this directory should be placed in /tftpboot/
!  * /boot/grub/pxegrub should be placed in /tftpboot/
   * /platform/i86pc/kernel/amd64/unix should be placed in /tftpboot/omnios/kayak/
   * the miniroot.gz file should be placed in /tftpboot/omnios/kayak/
  
  HTTP server:
   * The system install images should be placed an accessible URL
--- 7,55 ----
   * Set PKGURL to be the source of the OmniOS bits we wish to install with
     kayak, in case it's not the default "omnios" publisher for whatever release
     branch you have checked out.
  
   * zfs create rpool/kayak_image
!  * gmake {PREBUILT_ILLUMOS=<path>} BUILDSEND=rpool/kayak_image <target>
  
+ BUILDSEND must be specified.
+ 
+ PREBUILT_ILLUMOS should point to an already-built illumos-omnios of the
+ version you wish to construct an installer.  It is optional, but the build
+ will warn you if you do not specify it. The build uses "svccfg-native" if
+ possible to manipulate SMF on target images without conversing with the host
+ machine's SMF services.
+ 
+ <target> must be specified.
+ 
+ install-http:
+         Builds the <VERSION>.zfs.bz2 file, which is what Kayak uses
+         for any install it does. Independent target.
+ 
+ install-tftp:
+         Builds the miniroot.gz file, which is what PXE Kayak feeds to
+         GRUB or Loader to boot itself on a PXE boot. Independent target.
+ 
+ install-iso:
+         Builds both install-{http,tftp} and then proceeds to construct
+         <VERSION>.iso using components from both.
+ 
+ install-usb:
+         Builds install-iso, and then proceed to construct <VERSION>.usb-dd
+         based on the ISO image.
+ 
  Operation
  ---------
  
  DHCP server:
   * your server should be set to PXE boot
   * the DHCP server must return and IP, a nextserver and a bootfile
!  * the boot file should be the file {{{/boot/grub/pxegrub}}} or {{{/boot/pxeboot}}} from an existing OmniOS system
  
  TFTP server:
!  * menu.lst.01<macaddr_just_hex_caps> based on the template provided in this directory should be placed in /tftpboot/ if using grub, or put loader.conf.local in /tftpboot/boot
!  * /boot/grub/pxegrub or /boot/pxeboot should be placed in /tftpboot/
   * /platform/i86pc/kernel/amd64/unix should be placed in /tftpboot/omnios/kayak/
   * the miniroot.gz file should be placed in /tftpboot/omnios/kayak/
  
  HTTP server:
   * The system install images should be placed an accessible URL