net/mosquitto: Bump to 1.4.1

Some useful fixes:
http://mosquitto.org/2015/04/version-1-4-1-released/

Drops a patch that has been rolled into upstream.

Signed-off-by: Karl Palsson <karlp@remake.is>

net/mosquitto/patches/100-libwebsockets-fixes.patch

@@ -1,13 +0,0 @@
-diff --git a/src/websockets.c b/src/websockets.c
-index 95f8a81..cf2b5e7 100644
---- a/src/websockets.c
-+++ b/src/websockets.c
-@@ -72,7 +72,7 @@ struct libws_http_data {
- 	FILE *fptr;
- };
- 
--#ifndef HTTP_STATUS_NOT_FOUND
-+#ifndef LWS_FEATURE_SERVE_HTTP_FILE_HAS_OTHER_HEADERS_ARG
- 	/* This is libwebsockets 1.2.x or earlier, we have to degrade our capabilities.
- 	 * Once lws 1.3 is widely available this should be removed. */
- #	define LWS_IS_OLD