Accept missing semicolon after do-while statement.

Accept missing semicolon after do-while statement.

Although not valid according to ECMA 5.1, both JSC and V8 accept a
missing semicolon after a do-while loop. (Both JSC and V8 do not do this
through automatic semicolon insertion, but handle it as a special case.)

Change-Id: Iff2b07b894564740d2dcbf9b1d46bc279d30b9e3
Reviewed-by: Alan Alpert <aalpert@rim.com>