RFR 8130022: Use Java-style array declarations consistently

[Ivan Gerasimov]

Hello!

We've got a request to fix javadoc for SecureRandom, so that the example 
code will read
byte[] bytes = new byte[20];
instead of
byte bytes[] = new byte[20];

I took opportunity to make all array declarations throughout 
security-lib source code more of Java-style.

Would you please help review this cleanup?

BUGURL: https://bugs.openjdk.java.net/browse/JDK-8130022
WEBREV: http://cr.openjdk.java.net/~igerasim/8130022/00/webrev/

Sincerely yours,
Ivan