Minor fix to sorting versions.

lib/core/Manager.js

@@ -530,10 +530,10 @@ Manager.prototype._electSuitable = function (name, semvers, nonSemvers) {
         } else {
             // Give priority to the one that is a version
             if (version1) {
-                return 1;
+                return -1;
             }
             if (version2) {
-                return -1;
+                return 1;
             }
         }
 

lib/core/ResolveCache.js

@@ -226,10 +226,10 @@ ResolveCache.prototype.list = function () {
                 return semver.compare(pkgMeta1.version, pkgMeta2.version);
             }
             if (pkgMeta1.version) {
-                return 1;
+                return -1;
             }
             if (pkgMeta2.version) {
-                return -1;
+                return 1;
             }
 
             return 0;