RFR(M): 8026253: New type profiling points: sparc support

[Roland Westrelin]

http://cr.openjdk.java.net/~roland/8026253/webrev.00/

The main difference with the x86 code is that on sparc, the current profile value is loaded, checked & updated and finally stored rather than checked & updated in place as is done on x86. As a consequence the code is somewhat simpler because concurrent updates to the profile are not possible.

Roland.