411755 MultiPartInputStreamParser fails on base64 encoded content
Merge remote-tracking branch 'origin/jetty-8'

Conflicts:
	jetty-util/src/main/java/org/eclipse/jetty/util/B64Code.java
	jetty-util/src/main/java/org/eclipse/jetty/util/MultiPartInputStreamParser.java
	jetty-util/src/test/java/org/eclipse/jetty/util/MultiPartInputStreamTest.java