misc/ecflow: Fix build on 12

Missing #include <time.h> caused build failure.

Reported by:	fallout

misc/ecflow/files/patch-ACore_src_Passwd.cpp

@@ -0,0 +1,14 @@
+- fixes failure: error: use of undeclared identifier 'time' on FreeBSD 12
+- This seems to be a general problem that this header isn't included.
+- it's unclear how to report bugs: emails to Software.Software@ecmwf.int bounce, and linked JIRA account has no such project.
+
+--- ACore/src/Passwd.cpp.orig	2022-09-04 16:37:50 UTC
++++ ACore/src/Passwd.cpp
+@@ -13,6 +13,7 @@
+ // Description :
+ //============================================================================
+ 
++#include <time.h> // for time(3)
+ #include <unistd.h>
+ 
+ #include "Passwd.hpp"