Look for epoll.h in configure instead of types.h (#929)

Author: pamaddox

ChangeLog.md

@@ -4,6 +4,8 @@
 
 ## 2.7
 
+ * Update `configure.ac` to look for `epoll.h` when checking for epoll.
+
 ### 2.7.2
 
  * Add include of `cstdint.h` to `mtev_json_object.h` to fix include order

configure.ac

@@ -834,8 +834,8 @@ fi
 
 AC_CACHE_CHECK([for epoll support], ac_cv_have_epoll, [
 	AC_TRY_LINK(
-		[ #include <sys/types.h> ],
-		[ int a; a = epoll_create(); (void)a;],
+		[ #include <sys/epoll.h> ],
+		[ int a; a = epoll_create(0); (void)a;],
 		[ ac_cv_have_epoll="yes" ],
 		[ ac_cv_have_epoll="no" ]
 	)