Code Review Request: 7152007: Fix warnings in sun/rmi/rmic

Hi, The warning fixes in sun/rmi/rmic originally pushed as a part of CR 7146763, were undone by 7151348 due to build breakage when SKIP_BOOT_CYCLE is set to false. This CR attempts to incorporate these warning fixes into jdk8. Most of the changes have already been code-reviewed [1], but one line is changed in accordance to Stuart Mark's suggestion[2], so that the build doesn't break. Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7152007 Webrev: http://cr.openjdk.java.net/~khazra/7152007/webrev.00/ Thanks, Kurchi [1] http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-February/009315.ht... [2] http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-March/009481.html