make dependency problem with new makefiles

[Jeff Trawick]

In case it isn't obvious, there is a dependency problem that some make 
implementations complain about.  Here is Solaris make:

$ make
make: Warning: Infinite loop: Target `include/apr_pools.h' depends on itself
Current working directory /export/home/trawick/apache/apr
make: Warning: Infinite loop: Target `include/apr_pools.h' depends on itself
Current working directory /export/home/trawick/apache/apr
make: Warning: Infinite loop: Target `include/apr_pools.h' depends on itself
Current working directory /export/home/trawick/apache/apr
z/OS make has similar complaints when using Sascha's non-python rewrite of the 
new system.