native code coverage for src/java.base/share/native/libjava/Array.c is rather low, should close the cc gap.

all of Java_java_lang_reflect_Array_getXXX and Java_java_lang_reflect_Array_setXXX in src/java.base/share/native/libjava/Array.c are not covered (except of Java_java_lang_reflect_Array_get and Java_java_lang_reflect_Array_set)