Fix read-integer to deal with missing BigInteger constructor
Update to Java commit 75e6222 (2012.10.12): Add some tests for bigint/bigdec
Update to Java commit 3ff724a (2012.10.12): Rename test functions with shorter names
Update to Java commit 63c047e (2013.01.18): Changed exception message for EOF in string literal
Update to Java commit c81595e (2013.01.18): added tests for EOF in unterminated strings and arrays