Revert the change of compilationUnit

Author: wherewhere

src/syntax.grammar

@@ -1211,18 +1211,9 @@ fixedPtrDeclarator { identifier '=' expr }
 // Compilation unit
 
 compilationUnit {
-	externAliasDirective* usingDirective* /*globalAttrs?*/ memberDecl*
+	externAliasDirective* usingDirective* /*globalAttrs?*/ namespaceMemberDecl*
 }
 
-memberDecl
-	{ fieldDecl
-	| methodDecl
- 	| namespaceDecl
-	| propertyDecl
-	| typeDecl
-	| enumMemberDecl
-	}
-
 
 // Namespace declaration