RFR: JDK-8254843: Exception launching app on windows in some cases

[Andy Herrick]

JDK-8254843: Exception launching app on windows in some cases
loading splashscreen.dll in WinLaunchercpp would load java.dll from path instead of runtime/bin causing jni launcher to
crash. instead we just use what used to be the fallback, using loadDllWithAddDllDirectory().

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Commit messages:
 - JDK-8254843: Exception launching app on windows in some cases

Changes: https://git.openjdk.java.net/jdk/pull/706/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=706&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8254843
  Stats: 15 lines in 1 file changed: 0 ins; 10 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/706.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/706/head:pull/706

PR: https://git.openjdk.java.net/jdk/pull/706