Fix InternalRegexCompiledOption on DNX; prepare 1.1.572 release

BasicTest_dnxcore50/project.json

@@ -11,7 +11,7 @@
   ],
   "dependencies": {
     "StackExchange.Redis": {
-      "version": "1.1.0-alpha2",
+      "version": "1.1.572-alpha",
       "target": "project"
     }
   },

StackExchange.Redis.StrongName/project.json

 {
-  "version": "1.1.0-alpha2",
+  "version": "1.1.572-alpha",
   "description": "High performance Redis client, incorporating both synchronous and asynchronous usage.",
   "authors": [ "Stack Exchange inc., marc.gravell" ],
   "owners": [ "marc.gravell" ],

StackExchange.Redis.Tests/project.json

@@ -7,7 +7,7 @@
   "licenseUrl": "",
   "dependencies": {
     "StackExchange.Redis": {
-      "version": "1.1.0-alpha2",
+      "version": "1.1.572-alpha",
       "target": "project"
     }
   },

StackExchange.Redis/StackExchange/Redis/InternalRegexCompiledOption.cs

@@ -13,8 +13,10 @@ internal static class InternalRegexCompiledOption
         static InternalRegexCompiledOption()
         {
 #if CORE_CLR
-            if (!Enum.TryParse("Compiled", out RegexCompiledOption))
-                RegexCompiledOption = RegexOptions.None;
+            RegexOptions tmp; 
+            if (!Enum.TryParse("Compiled", out tmp))
+                tmp = RegexOptions.None;
+            Default = tmp;
 #else
             Default = RegexOptions.Compiled;
 #endif

StackExchange.Redis/project.json

 {
-  "version": "1.1.0-alpha2",
+  "version": "1.1.572-alpha",
   "description": "High performance Redis client, incorporating both synchronous and asynchronous usage.",
   "authors": [ "Stack Exchange inc., marc.gravell" ],
   "owners": [ "marc.gravell" ],