RFR: JDK-8244634:, LoadLibraryW failed from tools/jpackage tests after JDK-8242302

[Alexey Semenyuk]

Please review fix [2] for jpackage bug [1].

Fix failure to load jli.dll from app launcher. The fix is to append path 
to directory with jli.dll to PATH env variable and load jli.dll with 
altered value of PATH if the first attempt to load jli.dll without 
altering PATH fails.

- Alexey

[1] https://bugs.openjdk.java.net/browse/JDK-8244634

[2] http://cr.openjdk.java.net/~asemenyuk/8244634/webrev.00