RFR: 8236808: javafx_iio can not be used in static environment

[Johan Vos]

The static JNI_OnLoad naming should be used whenever we are building a static lib (not only for iOS).
We now have the STATIC_BUILD property to determine if we are making a
static build, so we no longer need to check on ios specific patterns.

Fix JDK-8236808

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Commits:
 - 54c14bb8: The static JNI_OnLoad naming should be used whenever we are building

Changes: https://git.openjdk.java.net/jfx/pull/81/files
 Webrev: https://webrevs.openjdk.java.net/jfx/81/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8236808
  Stats: 10 lines in 1 file changed: 0 ins; 8 del; 2 mod
  Patch: https://git.openjdk.java.net/jfx/pull/81.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/81/head:pull/81

PR: https://git.openjdk.java.net/jfx/pull/81