RFR(XS) 8180324: failed JVMCI junit test NativeCallTest.java

[Ekaterina Pavlova]

Hi,

Please review this small change that fixes compiler/jvmci/jdk.vm.ci.code.test/src/jdk/vm/ci/code/test/NativeCallTest.java test.
The test missed 'native' declaration and as result failed with UnsatisfiedLinkError when '-nativepath' flag was not passed to
jtreg. Now the test will fail with "Use -nativepath to specify the location of native code" error message which is more
understandable.

Fixed also runtime/noClassDefFoundMsg/NoClassDefFoundMsg.java and
serviceability/jvmti/GetModulesInfo/JvmtiGetAllModulesTest.java tests which had the same issue.

   bug: https://bugs.openjdk.java.net/browse/JDK-8180324
webrev: http://cr.openjdk.java.net/~epavlova//8180324/webrev.00/

Tested by running jprt plus manual testing of fixed tests.

thanks,
-katya

p.s.
 Igor Ignatyev volunteered to sponsor this change.