Erik:
This patch changes the help text printed when the bootjdk is
missing to "OpenJDK distributions are available at
http://jdk.java.net/.; and removes all the OS specific help texts for
that particular dependency.
Bug: https://bugs.openjdk.java.net/browse/JDK-8219788
Configure tries to be helpful with suggested commands for installing
missing dependencies. The commands for installing a bootjdk are out of
date and because of the accelerated release cycle, don't really work
anymore. This patch changes the help text printed when the bootjdk is
missing to
