RIC-671/tc 7017 prerequisites cyclic (#67)

* Added ArtCompiler test tc_7017_prerequisitesCyclic

* Fixed matching words

Author: sergiodedios

art-comp-test/tests/tc_7017/testcase.md

@@ -2,14 +2,14 @@
 group: validation
 steps: generate
 ac_output match1: WARNING[7017]|top.tcjs|8:0|itself|prerequisite
-ac_output match1a: top.tcjs|9:5|has lib.tcjs as prerequisite
+ac_output match1a: top.tcjs|9:5|has lib.tcjs as a prerequisite
 ac_output match1b: lib.tcjs|6:5|has lib02.tcjs as a prerequisite
 ac_output match1c: lib02.tcjs|5:5|has top.tcjs as a prerequisite
 
 ac_output match2: WARNING[7017]|lib.tcjs|5:0|itself|prerequisite
 ac_output match2a: lib.tcjs|6:5|has lib02.tcjs as a prerequisite
-ac_output match2b: lib02.tcjs|5:5|has top.tcjs as prerequisite
-ac_output match2c: top.tcjs|9:5|has lib.tcjs as prerequisite
+ac_output match2b: lib02.tcjs|5:5|has top.tcjs as a prerequisite
+ac_output match2c: top.tcjs|9:5|has lib.tcjs as a prerequisite
 
 ac_output match3: WARNING[7017]|lib02.tcjs|4:0|itself|prerequisite
 ac_output match3a: lib02.tcjs|5:5|has top.tcjs as a prerequisite