Move readFullyAndClose method into LUNI utils' InputStreamHelper, and roll the input stream exposer code into there too.
Replace a number of places that read the full stream with calls to the new helper.
Part of HARMONY-6393 (fix "new byte[in.available()]" anti-pattern)

git-svn-id: https://svn.apache.org/repos/asf/harmony/enhanced/classlib/trunk@887293 13f79535-47bb-0310-9956-ffa450edef68
11 files changed