RFR: JDK-8247790: javac shouldn't allow type variable references from local static declarations

[Vicente Romero]

Hi,

Please review the fix for [1] at [2]. The issue here is that local 
interfaces, enums and records shouldn't be allow to refer to type 
variables defined in an enclosing context. The compiler was checking for 
this if the type variables were defined by the enclosing class but 
references to type variables defined by the enclosing method were 
allowed. This patch is covering this gap,

Thanks,
Vicente

[1] http://cr.openjdk.java.net/~vromero/8247790/webrev.00/
[2] https://bugs.openjdk.java.net/browse/JDK-8247790