Support for Windows 64-bit JDK

I have verified jvm.dll only exists under jre/bin/server for 64-bit jdk1.6.0_43, jdk1.7.0_25, and jdk1.7.0_55.
For 32-bit jdk1.7.0_55, I found jvm.dll under both jre/bin/client and jre/bin/server.

I have added the additional path and changed comments accordingly. Please let me know if you have any thoughts or suggestions.