Log Message:
Update to 0.47.0

  TOOL_DEPENDS is supported by default (pkg_src_summary stage)

  Support for cross-builds (not tested yet)

  stage_checks:
    - gen_unregistered_CONFLICTS was disabled, it is too slow.
    - additional section for memory allocation failures was added.
    - improvements for "missing progs", "missign header" and \ 
"library
      not found sections".

  distbb_chroot:
    - Option -p was added and other improvements.

  distbb.conf and distbb.default.conf:
    - Variable OS was renamed to OPSYS
    - home-made function "assign" was replaced with :=
    - New config variable ULIMIT_CMD was introduced.
      It defaults to "ulimit -t 1800"

  upload_pkgs_all_files: fix find(1) arguments.
  Thanks to Andrey Oktyabrski for the report.