jdk7u-b20: jdk7u6-dev

[lana.steuck at oracle.com]

http://hg.openjdk.java.net/jdk7u/jdk7u6/rev/e79fa743fe5a 
http://hg.openjdk.java.net/jdk7u/jdk7u6/langtools/rev/32acb67a7953 
http://hg.openjdk.java.net/jdk7u/jdk7u6/jdk/rev/09145b546a2b 
http://hg.openjdk.java.net/jdk7u/jdk7u6/jaxws/rev/6d17242f12ed 
http://hg.openjdk.java.net/jdk7u/jdk7u6/jaxp/rev/4f7b77cc3b25 
http://hg.openjdk.java.net/jdk7u/jdk7u6/hotspot/rev/0aea8f0afd27 
http://hg.openjdk.java.net/jdk7u/jdk7u6/corba/rev/f0c51b691d34 

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All the fixes will be tested during promotion (no PIT testing at this point):
7178079 java classes_awt      REGRESSION: Some AWT Drag-n-Drop tests fail since JDK 7u6 b1
7183209 java classes_io       Backout 7105952 changes for jdk7u
7177173 java classes_swing    [macosx] JFrame.setExtendedState(JFrame.MAXIMIZED_BOTH) not
7180621 java classes_util     fix broken threshold value in 7180240
7182971 tool solaris          Need to include documentation content for JCMD man page