allow cookie, header and stream only in cgi mode.

__jet.cpp

@@ -6,7 +6,8 @@
 namespace jet {
    
    __jet::__jet(coreutils::ZString &in, coreutils::MString &parentOut, Global &global, Tag *parent, Tag *local) : Tag(in, parentOut, global, parent, this) {
-      if(keywordDefined("cgi") && (keywords[resolveKeyword("cgi")] == "true")) {	 
+      if(keywordDefined("cgi") && (keywords[resolveKeyword("cgi")] == "true")) {
+	 global.cgi = true;
 	 coreutils::ZString requestMethod(getenv("REQUEST_METHOD"));
 	 if(requestMethod == "POST") {
 	    coreutils::ZString contentLength(getenv("CONTENT_LENGTH"));