Fix/sjcl variable (#8099)

* refactor: use files to add prefix

* fix: always use $tw.sjcl

* refactor: move sjcl to lib/sjcl

* fix: require sjcl in lib/

* refactor: move sjcl.js back into /boot

boot/sjcl.js.meta

@@ -1,3 +0,0 @@
-title: $:/library/sjcl.js
-type: application/javascript
-library: yes

boot/tiddlywiki.files

@@ -0,0 +1,35 @@
+{
+	"tiddlers": [
+		{
+			"file": "sjcl.js",
+			"fields": {
+				"title": "$:/library/sjcl.js",
+				"type": "application/javascript",
+				"library": "yes"
+			},
+			"prefix": "(function(define) {\n",
+			"suffix": "\n})(function (_,defined){window.sjcl = defined()})\n"
+		},
+		{
+			"file": "boot.js",
+			"fields": {
+				"title": "$:/boot/boot.js",
+				"type": "application/javascript"
+			}
+		},
+		{
+			"file": "bootprefix.js",
+			"fields": {
+				"title": "$:/boot/bootprefix.js",
+				"type": "application/javascript"
+			}
+		},
+		{
+			"file": "boot.css.tid",
+			"fields": {
+				"title": "$:/boot/boot.css",
+				"type": "text/css"
+			}
+		}
+	]
+}

core/modules/utils/utils.js

@@ -825,7 +825,7 @@ options.length .. number of characters returned defaults to 64
 */
 exports.sha256 = function(str, options) {
 	options = options || {}
-	return sjcl.codec.hex.fromBits(sjcl.hash.sha256.hash(str)).substr(0,options.length || 64);
+	return $tw.sjcl.codec.hex.fromBits($tw.sjcl.hash.sha256.hash(str)).substr(0,options.length || 64);
 }
 
 /*