6999438: remove support for exotic identifiers from JDK 7
Reviewed-by: mcimadamore
T6999438.java:8:9: compiler.err.illegal.char: 35
T6999438.java:8:10: compiler.err.illegal.start.of.type
T6999438.java:8:25: compiler.err.expected: token.identifier
T6999438.java:8:26: compiler.err.expected: ';'
T6999438.java:9:2: compiler.err.premature.eof
5 errors