RFR- 7200297 jdwp and hprof code do not handle multiple sun.boot.library.path elements correctly

[BILL PITTORE]

This bug was reviewed by serviceability and hotspot-runtime-dev lists 
since it dealt with jvmti agent code.
 Comments welcome. The intent is to push into tl/jdk tree and then 
eventually back into jdk7u-dev hopefully.  Webrev here:

http://cr.openjdk.java.net/~bpittore/7200297/webrev.04/
And previous reviews here:
http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2012-November/004801.html

thanks,
bill