configure: move the log4cpp config.h generation to config.status
configure: move the log4cpp config.h generation to config.status

Using the correct AC_ macro trickery, the custom macro
has been moved into config.status.
This now *really* fixes the whole config file generation mess.

Signed-off-by: Peter Soetens <4b8373d016f277527198385ba72fda0feb5da015@thesourceworks.com>

orocos-toolchain/log4cpp,phamelin/orocos-log4cpp,phamelin/orocos-log4cpp,phamelin/orocos-log4cpp,orocos-toolchain/log4cpp,phamelin/orocos-log4cpp