* live.sh generates conf/distro/include/preferred-xorg-versions-live.inc with
  latest versions available at http://xorg.freedesktop.org/releases/individual/
* 7.5.sh generates preferred-xorg-versions-X11R7.5-live.inc with latest
  versions available at http://www.x.org/releases/X11R7.5/src/
* Temporary files are created in script directory and contains info
  about possible version updates, missing recipes (in "date".log) and
  also generated shell commands for copying recipe from older version
  etc (in "date".cmd).

This reverts commit 117ec4def4dff7abad394279698e1ddaef9407a7.

Signed-off-by: Marcin Juszkiewicz <marcin@juszkiewicz.com.pl>

oe-source-mirror-build.py compares checksums stored in checksums.ini
with files in DL_DIR and outputs list of good ones. Such list can be
used for populating local OE sources mirror.

OK, this saves a grand total of one second a few times a week, but it
was bugging me...

Signed-off-by: Michael Smith <msmith@cbnco.com>

checksum sorter, source checker:
* exit(1) on failure;
* send errors to stderr;
* make executable

checksum sorter:
* read from stdin if no arg;
* accept --inplace option to read and write from the same file;
* check that input file exists as ConfigParser.read() doesn't treat
  missing files as an error.

Signed-off-by: Michael Smith <msmith@cbnco.com>