RFR: JDK-8210702 Remove dtrace mapfiles

[Magnus Ihse Bursie]

This is the last part of the mapfile cleanup. Two special libraries for 
supporting dtrace on solaris was not converted before.

As before, I have verified that there is no unwanted symbol changes in 
the resulting libraries.

(This fix also removes the libjsound mapfile once and for all -- the 
previous removal was lost due to hg merge issues.)

Bug: https://bugs.openjdk.java.net/browse/JDK-8210702
WebRev: 
http://cr.openjdk.java.net/~ihse/JDK-8210702-remove-last-mapfiles/webrev.01

/Magnus