'make static' chooses an appropriate list of files for cppcheck

* Previously we were checking all CPP files, we don't need to check
test drivers (test*cpp) for style.
* Instead of *.h*, use a more correct *.h *.hpp

Makefile

@@ -76,7 +76,7 @@ profile: clean all
 # make static - will perform static analysis in the matter currently used
 #               on the autograder
 static:
-	cppcheck --enable=all --suppress=missingIncludeSystem *.c* *.h*
+	cppcheck --enable=all --suppress=missingIncludeSystem $(SOURCES) *.h *.hpp
 
 # highest target; sews together all objects into executable
 all: $(EXECUTABLE)