[PATCH 00/10 v3] usage()/--help clean up & unification, and extend fdtdump

[Mike Frysinger <vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>]

Each utility currently open codes how they process options and
implement usage().  This leads to inconsistent behavior and output
which sucks.  A bunch also get common things wrong (like sending
--help to stderr).

Rather than go through them one by one and fix their bugs, start
a new mini framework in the util.[ch] code base.  This allows the
utils to be much more data driven in their approach to options --
they declare certain structures with the right format, and then
call usage() as needed.  The new util code takes care of the rest.

I also snuck in a few minor fixes in this patch series that I
noticed as I was hacking on things.  Really I just wanted --scan
and --debug options in the fdtdump tool :).

I've made sure each patch builds & passes `make check` by itself.
So things should be git bisectable.

For the v3 series:
 - add dedicated _len read helpers rather than rework existing ones
 - rename dprintf() to dumpf() in fdtdump

Mike Frysinger (10):
  utilfdt_read_err: use xmalloc funcs
  utilfdt_read: pass back up the length of data read
  die: constify format string arg
  util_version: new helper for displaying version info
  fdtdump: make usage a bit more friendly
  fdtdump: add a --scan option
  dtc/fdt{get,put}/convert-dtsv0-lexer: convert to new usage helpers
  util: drop "long" from usage helpers
  util: add common ARRAY_SIZE define
  fdtdump: add a debug mode

 convert-dtsv0-lexer.l |  24 +++++++----
 dtc.c                 | 116 +++++++++++++++++++++++++-------------------------
 dtc.h                 |   1 -
 fdtdump.c             | 110 ++++++++++++++++++++++++++++++++++++++++++-----
 fdtget.c              |  60 ++++++++++++--------------
 fdtput.c              |  63 +++++++++++++--------------
 util.c                |  84 +++++++++++++++++++++++++++++++++---
 util.h                |  85 +++++++++++++++++++++++++++++++++++-
 8 files changed, 393 insertions(+), 150 deletions(-)

-- 
1.8.1.2