Reviewed-by: tbell, ohair, dcubed, andrew

Summary: Remove stray quote in Character.valueOf javadoc, using Ulf's \u005CuXXXX technique
Reviewed-by: darcy

Reviewed-by: alanb

6868627: (spec) Files.walkFileTree doesn't make it clear that uncaught errors and exceptions are propagated
Reviewed-by: sherman

6873621: (file) FileStore.supportsFileAttributeView(Class<FileAttributeView> type) returns wrong result
Reviewed-by: andrew

Reviewed-by: vinnie

Reviewed-by: mullan