Add new function:
The intent is that this function would wrap the underlying Apache function:
This function allows one to determine if certain Apache command line options were used. For example, if the '-DONE_PROCESS' command line option was used in explicitly starting "httpd".
if apache.exists_config_define("ONE_PROCESS"): ... do something
Exposing of this function would provide equivalent functionality to the "IfDefine" directive available in Apache configuration files.
The availability of this option would allow special debugging code to consult whether Apache is run in one process mode and thus determine whether the debugging code should be able to be run in the first place. Eg. pdb support.