Add function to the String API for locating the last instance of a substring in a string.



git-svn-id: http://yate.null.ro/svn/yate/trunk@5916 acf43c95-373e-0410-b603-e72c3f656dc1
Add option to dinamically load JS scripts through engine.command.



git-svn-id: http://yate.null.ro/svn/yate/trunk@5917 acf43c95-373e-0410-b603-e72c3f656dc1
Merge branch 'upstream' of github.com:vir/yate into deb
Updated debian package version to 5.4.1~svn5917