RFR: 8074657: Missing space on a boundary of concatenated strings

[Ivan Gerasimov]

Hi all!

grep found a few places, where a space is missing.

Would you please help review this cleanup fix?

BUGURL: https://bugs.openjdk.java.net/browse/JDK-8074657
WEBREV: http://cr.openjdk.java.net/~igerasim/8074657/00/webrev/

Sincerely yours,
Ivan