allow single quote " ' " in query

see http://mantis.tokeek.de/view.php?id=379
-add QueryGoal test case for this

source/net/yacy/search/query/QueryGoal.java

@@ -52,7 +52,7 @@ public class QueryGoal {
     private static char space = ' ';
     private static char sq = '\'';
     private static char dq = '"';
-    private static String seps = ".:;#'*`,!$%()=?^<>/&_";
+    private static String seps = ".:;#*`,!$%()=?^<>/&_";
     
     public String query_original;
     private HandleSet include_hashes, exclude_hashes;

test/net/yacy/search/query/QueryGoalTest.java

@@ -0,0 +1,38 @@
+package net.yacy.search.query;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+
+public class QueryGoalTest {
+
+    /**
+     * Test of getIncludeString method, of class QueryGoal.
+     */
+    @Test
+    public void testGetIncludeString() {
+        HashMap<String, String[]> testdata = new HashMap<String, String[]>();
+        // Prameter:  (Query, [result_term1, result_term2 ..])
+        testdata.put("O'Reily's book", new String[]{"o'reily's", "book"});
+        testdata.put("\"O'Reily's book\"", new String[]{"o'reily's book"}); // quoted term
+        testdata.put("\"O'Reily's\" +book", new String[]{"o'reily's", "book"}); // +word
+        testdata.put("Umphrey's + McGee", new String[]{"umphrey's", "mcgee"});
+        testdata.put("'The Book' library", new String[]{"the book","library"}); //single quoted term
+
+        for (String testquery : testdata.keySet()) {
+            QueryGoal qg = new QueryGoal(testquery); // get test query
+            String[] singlestr = testdata.get(testquery); // get result strings
+
+            Iterator<String> it = qg.getIncludeStrings();
+            int i = 0;
+            while (it.hasNext()) {
+                String s = it.next();
+                System.out.println(singlestr[i] + " = " + s);
+                assertEquals(s, singlestr[i]);
+                i++;
+            }
+        }
+    }
+
+}