RFR: JDK 9: 8024033: [launcher] remove solaris dual mode support

[Kumar Srinivasan]

Hello Joe, Martin, et. al.,

In JDK8, solaris 32-bit support was removed entirely, this is the only 
platform that required
  dual-mode support, ie. 32-bit and 64-bit binaries co-located in the 
same binary hierarchy
on the disk. In JDK 8 the DUAL_MODE support was disabled in the 
launcher, using compile
time conditionals, however  in JDK9 we wish to remove the logic 
entirely, this is messy and
makes the launcher cleaner and easier to maintain.

Webrev:
http://cr.openjdk.java.net/~ksrini/8024033/webrev.0/

Thanks
Kumar