RFR(XS): 8204684: [AIX] Build of libjli_static broken after change 8204572 (SetupJdkLibrary)

[Volker Simonis]

Hi,

can I please have a review for the following trivial build change
which fixes a build problem on AIX when building libjli_static:

http://cr.openjdk.java.net/~simonis/webrevs/2018/8204684/
https://bugs.openjdk.java.net/browse/JDK-8204684

The reason is that change 8204572 forgot to add LIBJLI_SRC_DIRS as
include path for the libjli_static build.

Thank you and best regards,
Volker