The handling of demos has not been up to the same quality as the rest of
the build. Worst of all is the use of non-named argument macros, which
makes the macro calls very hard to decipher.
The driver behind this fix is that I need to understand properly this
code to be able to clean up flag handling. But when addressing that, I
used to chance to also give CompileDemos some well-needed TLC. For
instance, I have also fixed so:
* "make clean-demos" clean demos.
* Moved closed logic out of open makefiles
* Long specialized recipes are now using simpler, more integrated approaches
Bug: https://bugs.openjdk.java.net/browse/JDK-8141261
WebRev:
http://cr.openjdk.java.net/~ihse/JDK-8141261-clean-up-demos/webrev.01
/Magnus
