Log message:
Pullup ticket #2421 - requested by he
Fix old-style bulk builds

Revisions pulled up:
- mk/bulk/build			1.104
- pkgtools/pkg_install/Makefile	1.154
---
    Module Name:	pkgsrc
    Committed By:	he
    Date:		Sun Jun  8 21:04:30 UTC 2008

    Modified Files:
    	pkgsrc/mk/bulk: build
    	pkgsrc/pkgtools/pkg_install: Makefile

    Log message:
    Commit two fixes which at least for me appear to be required when
    doing an old-style bulk build on 4.0 or older systems:

     - in mk/bulk/build, do "make update" instead of "make \ 
install + clean"
       when installing a new pkg_install
     - in pkgtools/pkg_install/Makefile, don't try to use our own
       executables (${WORKDIR}/pkg_add/pkg_add etc.) if they don't exist

    Discussed with joerg, and even though he's not entirely happy
    with the latter change, he didn't appear to have a better suggestion.

    This, and putting /usr/pkg/sbin earlier than /usr/sbin in the $PATH
    appears to be required to get an old-style bulk build going.