Don't init class during reflection signature scan.

Don't init class during reflection signature scan.

Do not merge to master -- this is 57ea16e8 from there.

When processing Class.getDeclaredMethods() we create Method objects.
These have arrays of classes that indicate the method parameter types.
While generating the array we were initializing the classes we found,
which isn't necessary and led to some unpleasantness described in
external bug 3005.