Fixed stupid compile problem when .onenter/.onleave support is enabled.
Thanks to Steve Huff for picking this up.
Added a patch from Arvind (?) which adds regex matching support for paths.
Nice. eg. enter /usr/src/linux(-2.4.21(-xfs)?)?
Arvind also added $ONDIRWD support from the pre-0.2.x versions back in. Quite
a handy thing to have, thanks Arvind.

Rewritten in C. This makes it smaller and faster and no longer takes half an
hour to compile.
Configuration file format has changed completely. Read the README or man page
for more information.
No longer using autoconf/automake as it's overkill for 400 lines of source.

Commented out some extraneous functions (drand) which were not being used but
caused compile problems on OSX.
Fixed some other compilation issues on OSX. Thanks to Ben Hines for both of
these OSX fixes.
Fixed some fairly major problems in the man page, referring to todorc rather
than ondirrc. Thanks again to Ben Hines for picking this up.
Re-added .onenter/.onleave support, but optionally (use -o to enable this
behaviour).
You can now pass the current working directory on the command line as the
second option. This fixes problems with traversing paths containing symlinks.
Thanks to Ralf Engelschall for pointing this out.
Cleaned up the code a bit.

Applied a patch sent in by Jason Kissinger to fix some cases where ; was not
being added to the end of shell lines, causing TCSH to barf.
The rc file lexer no longer uses regular expressions, but hard-coded lexical
element recognisers. It is an order of magnitude faster.
OnDir will no longer execute .onenter or .onleave scripts. This was a security
  disaster waiting to happen. There is a script included in the distribution
  called migrate.sh which will migrate any existing .onenter/.onleave scripts
  into your ~/.ondirrc. It is used by passing the paths you wish to migrate as
  arguments.

Fixed Makefile.am in ./src so all the source files are packaged - duh.
Changed static reference to ~athomas/.ondirrc to the generic case of
$HOME/.ondirrc. Another stupid one.
Fixed broken TCSH handling. Thanks to Daniel Macks for hunting this down as
well as the previous bug.

Now check for a .onexit as well.
Unset ONDIRWD variable after scripts have executed.
Added a config file /etc/ondirrc or ~/.ondirrc that contains directories and
  enter/exit scripts. This is the most secure way of having scripts execute and
  is preferred over .onenter and .onleave. See man page for further information.
  Thanks to Darren Chamberlain for this idea.

Added a patch sent in by Mira Tempír to check for group/other write
permissions on the scripts and refuse to run them if they are set.
Subsequently changed the name of the function to make more sense.
Added -V to display version.