The name of the ocamlfind binary should be read from the configuration. This is especially useful when cross-compiling.
This fixes #1387 Currently, when a library has C-sources and e.g. an executable depends on that library, then changing the C-sources and running '-build' does not yield a rebuild of the library. By adding these dependencies (rather removing the constraint), it seems to work fine. Signed-off-by: Christoph Höger <email@example.com>