From-SVN: r49104
* Makefile.in: Rebuilt. * Makefile.am (ordinary_java_source_files): Removed old file; added new file. * gnu/java/math/MPN.java: New file. * gnu/gcj/math/MPN.java: Removed. * java/math/BigInteger.java: Merged with Classpath. From-SVN: r48080