Further refine the Java syntax lexer for escaped strings
Parse backslash followed by anything, or any character except double quote or backslash.
(If this is still somehow wrong I can just copy one of the other lexers which is a little more complicated but gets this right.)
Reviewed By: amckinley
Maniphest Tasks: T13210
Differential Revision: https://secure.phabricator.com/D19763