Build: 268	Version: 2.4	Branch: Master

	* strings.java (empty(StringBuilder)): New method added.
	* strings.java (startsWith(StringBuilder, char)): New method
	  added.
	* strings.java (startsWith(StringBuilder, String)): New method
	  added.
	* strings.java (endsWith(StringBuilder, char)): New method added.
	* strings.java (endsWith(StringBuilder, String)): New method
	  added.
	* strings.java (startsWith(String, char)): New method added.
	* strings.java (endsWith(String, char)): New method added.
	* strings.java (indexOf(String, StringBuilder)): New method added.