Bug fixes

Fix for Issue #196187 Fixed case where sql query would fail. Thanks therzog"

Bug Fix http://drupal.org/node/196187 Thanks to therzog for the fix.
General Code Cleanup.

Development snapshot for Browscap in Drupal 6.

Changes since DRUPAL-6--1-0-BETA1:

• #230234: fixed "maxlength in math captcha too short"
• explicit access parameters in hook_menu as per http://drupal.org/node/243389

Word list CAPTCHA and Phrase CAPTCHA do not work properly yet, other challenges should work.

Changes since DRUPAL-6--1-0:

• #260228 by moshe weitzman. Simpler and earlier validation. Committed with permission form Chris.

Nightly development snapshot from 5.x branch