Fix path used in generated prolog class names

Force relative paths by passing the Prolog compiler only a relative
name from within $SRCDIR.  This avoids picking up the user's $HOME
path as part of the generated class file names, and prevents build
failures on filesystems where individual path components are limited
to 256 bytes.

Change-Id: I43f2a93daf857413401f4e1aeb24b9b2a8c741fe
6 files changed