RFR: 8039244: Don't use UINT32_FORMAT and INT32_FORMAT when printing uints and ints in the GC code

[Stefan Karlsson]

Please, review this patch to the GC code to change usages of 
UINT32_FORMAT and INT32_FORMAT to %u and %d when uints and ints are used.

While doing this change I found, and changed, a couple of places where 
we used UINT32_FORMAT to print variables that were less than 4 bytes.

webrev: http://cr.openjdk.java.net/~stefank/8039244/webrev.00/
bug: https://bugs.openjdk.java.net/browse/JDK-8039244

thanks,
StefanK