git: build - refactor rescue and initrd handling

[Matthew Dillon]

commit 9b724c0dcb2b9548a82d28d97e34375f64668669
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Fri Oct 26 18:33:57 2018 -0700

    build - refactor rescue and initrd handling
    
    * buildworld now builds the rescue directory tree and initrd
      image in /usr/obj.
    
    * installworld will install the rescue and initrd stuff if it
      does not exist on the destination.  If rescue or initrd stuff
      is already installed, it is not overwritten.
    
    * Add 'installrescue' and 'installinitrd' targets.  These will
      copy the rescue and initrd image built by buildworld.
    
    * The normal 'rescue' and 'initrd' targets are unchanged and
      should build (from scratch) and install the rescue and initrd
      stuff.
    
    * NOTE: crunchgen is currently hacked to add system paths when
      WORLDBUILD is defined, in order to access native binaries
      for 'uniq' and a few others, instead of building them in
      cross-tools.
    
      In particular, we have to use the native 'vnconfig' binary
      as building one in crosstools might not be compatible with
      the currently running system.  buildworld now uses 'vn' to
      create the initrd image.
    
      Possibly needs some work.

Summary of changes:
 Makefile            | 19 +++++++--------
 Makefile.inc1       | 67 ++++++++++++++++++++++++++++++++++++++++++-----------
 initrd/Makefile     |  9 +++----
 initrd/Makefile.inc |  8 +++++++
 initrd/mkinitrd.sh  |  5 ++++
 5 files changed, 80 insertions(+), 28 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/9b724c0dcb2b9548a82d28d97e34375f64668669


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