RFR: Fix incorrect .class suggestion for the member selection of the primitive-type expression

[ShinyaYoshida]

Hi Jan,
Please review my patch.

Commite message:
Fix incorrect .class suggestion for the member selection of the
primitive-type expression

Webrev: http://cr.openjdk.java.net/~shinyafox/kulla/201505101/webrev.00/

Can I push this?

Issue:
Currently, REPL prints "class" as suggestion for the member selection of
the primitive-type expression:
-> printf("").[TAB]
class

Regards,
shinyafox(Shinya Yoshida)