(ITS#5033) make depend breaks if configure doesn't know how

Full_Name: Hallvard B Furuseth Version: RE23, HEAD OS: HP-UX URL: Submission from: (NULL) (129.240.202.105) Submitted by: hallvard

If configure does not know how to make dependencies, it still asks us to run make depend. On HP-UX, that miscompile OpenLDAP.

In addition to fixing the "please run make depend" message, I suggest:

In build/openldap.m4, set OL_MKDEP= either ":" or "false". - ":" allows autobuild scripts that run "make depend" to work. - "false" warns people who do use "make depend" that build - modify source - rebuild may not work.

I've got no strong preference. Will use ":" if nobody disagrees.