FuzzyHash operator is optional and only installed if the headers for libfuzzy
was found in the system. Otherwise, the FuzzyHash operator is disable during
the compilation. After this commit, if some rules tries to use it, ModSecurity
will produce an runtime error not a config time error, allowing the web server
to procede normal with its operations.
IfDefines such as: <IfDefine MODSEC_2.5> are just compatible with Apache a
solution to check if some resource is available or not have to be developed
to be used in situations like that. This commit just removes the IfDefine.
