MergeRules

 Merge the similar rules - optimize the rulebase
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 Parameters
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 fis - complex structure describing the fuzzy inference system

       fis--input(i) --name
          |          |-range
          |          |-mf(j)--name
          |                 |-type
          |                 |-params
          |                 |-paramsy
          |                 |-RPx
          |                 |-RPy
          |-output(i)--name
          |          |-range
          |          |-mf(j)--name
          |                 |-type
          |                 |-params
          |                 |-paramsy
          |                 |-RPx
          |                 |-RPy
          |-rule(m)--antecedent(i)
          |        |-consequent(j)
          |        |-weight
          |        |-connection

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 Returned values
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 fis - complex structure describing the fuzzy inference system
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 Remarks
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 Zsolt Csaba Johanyák, johanyak.csaba@gamf.kefo.hu, v. 1.0,  15 January
 2007.