ltl: fix detection of some siPSL formulas

* src/ltlast/bunop.cc: Fix detection of f[:*2] as siPSL if f is siPSL
* src/tests/kind.test: Test it.
* NEWS: Mention it.

NEWS

 New in spot 1.99.1a (not yet released)
 
-  Nothing yet.
+  * Bugs fixed:
+    - p[+][:*2] was not detected as belonging to siPSL
 
 New in spot 1.99.1 (2015-06-23)
 

src/ltlast/bunop.cc

@@ -69,15 +69,11 @@ namespace spot
 	  break;
 	case FStar:
 	  is.accepting_eword = false;
+	  is.syntactic_si &= !child->is_boolean();
 	  if (max_ == unbounded)
-	    {
-	      is.finite = false;
-	      is.syntactic_si &= !child->is_boolean();
-	    }
-	  else
-	    {
-	      is.syntactic_si = false;
-	    }
+	    is.finite = false;
+	  if (min_ == 0)
+	    is.syntactic_si = false;
 	  break;
 	}
     }

src/tests/kind.test

@@ -130,6 +130,9 @@ Fa  M b,&!xLPgopra
 {a[+];b*;c[+]},&!xfPsopra
 {a[+] && b || c[+]},&!fPsopra
 {a[+] && b[+] || c[+]},&!xfPsopra
+{p[+]:p[+]},&!xfPsoprla
+(!p W Gp) | ({(!p[*];(p[+]:(p[*];!p[+])))[:*4][:+]}<>-> (!p W Gp)),&!xPpla
+{b[+][:*0..3]},&!fPsopra
 EOF
 
 run 0 ../kind input