Import Dragonfly Mail Agent into base system

It is a small and lightweight Mail Transport Agent.
It accepts mails from locally installed Mail User Agents (MUA) and delivers the
mails either locally or to a remote destination. Remote delivery includes
several features like TLS/SSL support, SMTP authentication and NULLCLIENT.

Make dma conditional to new WITHOUT_DMA option and make it respect WITHOUT_MAIL

Reviewed by:	peter
Discussed with:	emaste, bz, peter

1 files changed, 24 insertions, 0 deletions

diff --git a/contrib/dma/aliases_scan.l b/contrib/dma/aliases_scan.l
new file mode 100644
index 0000000..809d1e1
--- /dev/null
+++ b/contrib/dma/aliases_scan.l
@@ -0,0 +1,24 @@
+%{
+
+#include <string.h>
+#include "aliases_parse.h"
+
+#define YY_NO_INPUT
+
+int yylex(void);
+%}
+
+%option yylineno
+%option nounput
+
+%%
+
+[^:,#[:space:][:cntrl:]]+	{yylval.ident = strdup(yytext); return T_IDENT;}
+^([[:blank:]]*(#.*)?\n)+	;/* ignore empty lines */
+[:,\n]				return yytext[0];
+(\n?[[:blank:]]+|#.*)+		;/* ignore whitespace and continuation */
+\\\n				;/* ignore continuation.  not allowed in comments */
+.				return T_ERROR;
+<<EOF>>				return T_EOF;
+
+%%