RFR: JDK-8165161 Solaris: /usr/ccs /opt/sfw and /opt/csw are dead, references should be expunged

[Alan Burlison]

I posted this originally on build-dev, it was suggested I should also 
post it to core-libs-dev for review of some of the changes.

/usr/ccs /opt/sfw and /opt/csw are all obsolete and should be removed 
from the Solaris-related build infrastructure.

Bug:    https://bugs.openjdk.java.net/browse/JDK-8165161
Webrev: http://cr.openjdk.java.net/~alanbur/JDK-8165161/

JPRT hotspot tests all pass.

Thanks,

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Alan Burlison
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