A spec without a function provided should be pending not disabled

Fixes #840

src/core/Spec.js

@@ -50,7 +50,7 @@ getJasmineRequireObj().Spec = function(j$) {
 
     this.onStart(this);
 
-    if (!this.isExecutable() || enabled === false) {
+    if (!this.isExecutable() || this.markedPending || enabled === false) {
       complete(enabled);
       return;
     }
@@ -127,7 +127,7 @@ getJasmineRequireObj().Spec = function(j$) {
   };
 
   Spec.prototype.isExecutable = function() {
-    return !this.disabled && !this.markedPending;
+    return !this.disabled;
   };
 
   Spec.prototype.getFullName = function() {