Fix: Invocation of methods in old mono versions
Fix: Invocation of methods in old mono versions

Old mono versions didn't support optional "params" parameters
when invoking methods using reflection.

sillvan/Pash,sburnicki/Pash,Jaykul/Pash,Jaykul/Pash,WimObiwan/Pash,mrward/Pash,sburnicki/Pash,ForNeVeR/Pash,ForNeVeR/Pash,sillvan/Pash,Jaykul/Pash,sburnicki/Pash,mrward/Pash,WimObiwan/Pash,ForNeVeR/Pash,WimObiwan/Pash,mrward/Pash,WimObiwan/Pash,ForNeVeR/Pash,mrward/Pash,sillvan/Pash,sburnicki/Pash,sillvan/Pash,Jaykul/Pash