 - Make .vo files depend on coqdoc if COQ_XML is set (bug #848)  - Clean up NO_RECOMPILE_LIB treatment a bit  - Clean up .vo dependencies in general
 - Make .vo files depend on coqdoc if COQ_XML is set (bug #848)
 - Clean up NO_RECOMPILE_LIB treatment a bit
 - Clean up .vo dependencies in general


git-svn-id: a49b465eaba45b67e2e1e4e0b2c256a71f59fecb@9478 85f007b7-540e-0410-9357-904b9bb8a0f7

SamB/coq