too trivial (just do a locate config.h to see how many there are):
- replace occurances of config.h by RConfigure.h
- add #warning in config.h that is should not be used
- change HAVE_CONFIG to R__HAVE_CONFIG


git-svn-id: http://root.cern.ch/svn/root/trunk@16796 27541ba8-7e3a-0410-8455-c3a389f83636