* ftpcmd.y: Include "ftpd_var.h" and remove prototype for reply()

	* ftpcmd.y: Include "ftpd_var.h" and remove prototype for reply()
	and lreply(). Add prototypes and declare as returning void
	sizecmd(), help() and yylex(). Cleanup assignments in
	conditionals.

	* ftpd.c: Include <grp.h> for initgroups() prototype. Move
	reply(), lreply() prototypes to ftpd_var.h (and include
	same). Include "krb524.h" for krb524_convert_creds_kdc()
	prototype. Include secure.h. Provide static prototypes for
	ftpd_gss_convert_creds(), ftpd_gss_userok(), dolog(),
	receive_data(), login(), end_login(), disallowed_user(),
	restricted_user(), checkuser(). Declare main(), checkuser(),
	disallowed_user(), restricted_user(), end_login(), kpass(),
	retreive_data(), auth_data(), secure_printf(), ftpd_gss_userok(),
	as returning int. Declare setdlevel(), user(), pass(), login(),
	retreive(), store_file(), secure_error(), statfilecmd(),
	stat_cmd(), fatal(), reply(), lreply(), ack(), nack(), yyerror(),
	delete_file(), cwd(), makedir(), removedir(), pwd(), renamecmd(),
	dolog(), dologout(), passive(), perror_reply(), auth(),
	send_file_list(), reply_gss_error(), secure_gss_error(),
	ftpd_gss_convert_creds(), as returning void. Cleanup printf
	argument mismatches.

	* ftpd_var.h: New header file with many prototypes from ftpd.c.

	* popen.c (ftpd_popen): Add parenthesis in conditional to
	distinguish || vs &&. Add prototype for blkfree().
	(ftpd_pclose): Declare as returning int.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@13276 dc483132-0cff-0310-8789-dd5450dbe970