8008023: Get rid of utf8 chars in two tests Reviewed-by: jjg

8016569: javac, add new flag for polymorphic method signatures Reviewed-by: jjg Contributed-by: maurizio.cimadamore@oracle.com

8007907: javap, method com.sun.tools.javap.Main.run returns 0 even in case of class not found error Reviewed-by: jjg

8008547: javac, warning message: use of ''_'' as an identifier might not be supported in future releases, should be more especific Reviewed-by: jjg

8013576: Add stat support to LambdaToMethod Summary: LambdaToMethod should emit info to help diagnose/test lambda metafactory problems Reviewed-by: jjg, vromero

7113519: test/tools/javac/VersionOpt.java passes on windows Reviewed-by: jjg

8016193: Fix OAC issue in langtools docs Reviewed-by: darcy

Merge

8015648: Duplicate variable in lambda causes javac crash Summary: Missing flag in synthetic lambda blog is causing duplicates symbol to go undetected Reviewed-by: jjg, vromero

8015432: javac crashes with stack overflow when method called recursively from nested generic call Summary: Check.checkMethod should only be called after inference has completed Reviewed-by: jjg, vromero

8008627: Compiler mishandles three-way return-type-substitutability Summary: Compiler should not enforce an order in how ambiguous methods should be resolved Reviewed-by: jjg, vromero

7139681: Enhanced for loop: local variable scope inconsistent with JLS Summary: For-each loop variable is incorrectly visible from the for-each expression Reviewed-by: jjg, vromero