Make sure the module execution order is correct even when some modules are

loaded under runtime (`LoadModule') via the DSO mechanism:

     1. The list of loaded modules is now a dynamically allocated one
        and not the original statically list from modules.c
     2. The loaded modules are now correctly setup by LoadModule for
        later use by the AddModule command.
     3. When the DSO mechanism for modules is used APACI's `install'
        target now enables all created `LoadModule' lines per default because
        this is both already expected by the user _and_ needed to avoid
        confusion with the next point and reduces the Makefile.tmpl complexity
     4. When the DSO mechanism for modules is used, APACI's `install'
        target now additionally makes sure the module list is reconstructed
        via a complete `ClearModuleList+AddModule...' entry.
     5. The support tool `apxs' now also makes sure an AddModule command
        is added in addition to the LoadModule command.
     6. The modules.c generation was extended to now contain two
        comments to make sure no one is confused by the confusing terminology
        of loading/linking (we use load=link+load & link=activate instead of
        the obvious load=activate & link=link :-( )

This way now there is no longer a difference under execution time between
statically and dynamically linked modules.

Submitted by: Ralf S. Engelschall
Reviewed by: Brian Behlendorf, Jim Jim Jagielski


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81160 13f79535-47bb-0310-9956-ffa450edef68