Added Ant target 'api-diff' which allows arbitrary diffing against previous JSPWiki.jar artifacts. It prints a nicely formatted HTML page describing public API differences. The report file is tests/reports/API-changes.html.
Added Ant target 'api-diff' which allows arbitrary diffing against previous JSPWiki.jar artifacts. It prints a nicely formatted HTML page describing public API differences. The report file is tests/reports/API-changes.html.

git-svn-id: 6c0206e3b9edd104850923da33ebd73b435d374d@673883 13f79535-47bb-0310-9956-ffa450edef68

tateshitah/jspwiki,tateshitah/jspwiki,tateshitah/jspwiki,tateshitah/jspwiki