Fixed PHP 5.2 compatibility.
Fixed database table is not installed upon first plugin activation.
Fixed minimum WP compatibility is 3.1.0 (introduction of submit_button()).

This implies compatibility with MySQL 4.  However, PHP 4 is not supported.
- #1992748 by sun: Fixed Mollom PHP library does not encode path parameters of API calls.
Merge commit 'cf6abb4d5c927aa915e6170367807327dc76f1e4' into lib-path-encode
Merge pull request #27 from sun/lib-path-encode

PHP library does not encode path arguments of API calls
Merge pull request #26 from sun/compat

Fixed PHP 5.2 and WP 3.1.0 compatibility
- #2005392 by sun: Fixed Wrong API endpoint is hit when bogus bot fills out hidden fields with random strings.
- #29: Fixed wp_mollom database table is not created upon installation.
- #30: Added Requirements section to installation instructions.
Added/improved code comments.
Merge commit '05b1e2d9a23463ffc79a1df9ef77353dbe1b800c' into cleanup
- #28: Fixed settings checkboxes are not stored as arrays when empty, and checks must not be empty.
Merge pull request #32 from sun/cleanup

Cleanup