Improve message of ArrayStoreException.

Print the problematic types in ArrayStoreException.

When doing arraycopy:

"arraycopy: type mismatch: can not copy double[] into object array[]"
"arraycopy: type mismatch: can not copy object array[] into boolean[]"

For Object arrays, be more precise:

If one of the objects passed to araycopy is not an array at all:
"arraycopy: source type java.lang.String is not an array"
"arraycopy: destination type java.lang.String is not an array"
If the element types of the array mismatch:
"arraycopy: type mismatch: can not copy java.lang.String[] into java.util.Date[]"
If one of the elements of source can not be cast to the type of the destination:
"arraycopy: element type mismatch: can not cast one of the elements of java.lang.Object[] to the type of the destination array, java.util.Date"


For JNI call to SetObjectArrayElement() print types and index:

"type mismatch: can not store java.lang.String to java.util.Date[0]"
"type mismatch: can not store java.lang.String to java.lang.Object[1][][]"