Only allow command line invocation of the 'coder_upgrade.run.php' script
  by the 'exec' call within the submit handler of coder_upgrade.

Issue #1784826: Rename file_directory_path() to file_stream_path() to avoid issues with it being removed from core.

Issue #1058382: Improve exception handling in routines that expect a case statement. (Also issue #1515804)

Issue #1745068: fix check for core files; fix multi-line CSRF #warning message: so we can compare 7.x-1.x and 7.x-2.x results properly.

I once considered this good practice, but reality and experience shows that artificially/manually aligning variable assignments this way does not work out in practice.

Once a new variable is added, or the name of an existing is changed, all of the other lines suddenly need to be changed.  Thus, the versioning system will record changes for code that is otherwise unaffected.  And other patches/changes needlessly run into conflicts due to larger variable assignment block changes.

issue #1284052: give coder a bit of a drush facelift, support proper drush options, and allow a directory name to be specified

issue #1381528 by Frank Ralf: in 7.x upgrade rules hook_user example, link hook_user_presave instead of hook_user_validate, because hook_user_validate does not exist

issue #1377616 by Frank Ralf: link hook_block warning to 6.x function, since it doesn't exist in 7.x

small tweak to allow drush coder-review 1234567.patch to work as a patch instead of as a full file, supports extensions of .patch, .diff, and .tmp