[8u] RFR: 8207402: Stray *.debuginfo files when not stripping debug info

[Severin Gehwolf]

Hi,

Here is another little fix for JDK 8u for the no-debug-info-stripping
use-case. It depends on JDK-8207234 which introduces --with-native-
debug-symbols=[...] configure flag. Basically when no stripping of
debuginfo should be happening no .debuginfo/.diz files should be
produced at all by the build. This patch fixes that. Thoughts?

Bug: https://bugs.openjdk.java.net/browse/JDK-8207402
webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8207402/webrev.01/

Testing: I've built on linux x86_64 with "configure --with-native-
debug-symbols=internal ..." and manually verified those files no longer
get produced.

Thanks,
Severin