Use require() to get the definitions we need instead of conditional load()ing

or copy/pasted definitions (e.g. RFC822HEADER).

exec/load/822header.js

-const RFC822HEADER = 0xb0;  // from smbdefs.h
-const SMTPRECEIVED = 0xd3;
-const FIDOSEENBY   = 0xa2;
-const FIDOPATH     = 0xa3;
 require("utf8_ascii.js", 'utf8_ascii');
+require("smbdefs.js", 'RFC822HEADER');
 
 MsgBase.HeaderPrototype.get_rfc822_header=function(force_update, unfold)
 {

exec/load/mailproc_util.js

@@ -4,12 +4,9 @@
 
 // $Id$
 
-if(!js.global || js.global.NET_INTERNET==undefined)
-	load("sbbsdefs.js");
-if(!js.global || js.global.mail_get_name==undefined)
-	load("mailutil.js");	// mail_get_name() and mail_get_address()
-
-const RFC822HEADER = 0xb0;	// from smbdefs.h
+require("sbbsdefs.js", 'NET_INTERNET');
+require("smbdefs.js", 'RFC822HEADER');
+require("mailutil.js", 'mail_get_name');
 
 // Parses raw RFC822-formatted messages for use with SMTP Mail Processors
 // Returns an array of header fields parsed from the msgtxt

exec/load/newsutil.js

@@ -5,13 +5,8 @@
 
 // $Id$
 
-if(!js.global || js.global.mail_get_name==undefined)
-	load("mailutil.js");
-
-FIDOCTRL     = 0xa0	// from smbdefs.h
-FIDOSEENBY	 = 0xa2	// from smbdefs.h
-FIDOPATH     = 0xa3 // from smbdefs.h
-RFC822HEADER = 0xb0	// from smbdefs.h
+require("mailutil.js", 'mail_get_name');
+require("smbdefs.js", 'RFC822HEADER');
 					
 function write_news_header(hdr,writeln)
 {