tools: Add mailutil groundwork

Signed-off-by: Ian Moffett <ian@mirocom.org>

Makefile

@@ -4,7 +4,7 @@
 #
 
 .PHONY: all
-all: bin libremail endpoint
+all: bin libremail tools endpoint
 
 .PHONY: bin
 bin:
@@ -14,6 +14,10 @@ bin:
 libremail:
 	cd libremail/; make
 
+.PHONY: tools
+tools:
+	cd tools/; make
+
 .PHONY: endpoint
 endpoint:
 	cd endpoint/; make
@@ -22,3 +26,4 @@ endpoint:
 clean:
 	cd endpoint/; make clean
 	cd libremail/; make clean
+	cd tools/; make clean