English grammar fixes

configure.ac

@@ -2402,7 +2402,7 @@ AC_MSG_NOTICE([GNU libmicrohttpd ${PACKAGE_VERSION} Configuration Summary:
   Target directory:  ${prefix}
   Cross-compiling:   ${cross_compiling}
   Operating System:  ${host_os}${os_ver_msg}
-  Shutdown of listening socket trigger select: ${mhd_cv_host_shtdwn_trgr_select}
+  Shutdown of listening socket triggers select: ${mhd_cv_host_shtdwn_trgr_select}
   Inter-thread comm: ${use_itc}
   poll support:      ${enable_poll=no}
   epoll support:     ${enable_epoll=no}

src/microhttpd/daemon.c

@@ -3219,10 +3219,10 @@ MHD_add_connection (struct MHD_Daemon *daemon,
       (0 == (daemon->options & MHD_USE_ITC)))
   {
     MHD_DLOG (daemon,
-              _ ("MHD_add_connection() has called for daemon started without"
-                 " MHD_USE_ITC flag.\nDaemon will not process newly added"
-                 " connection until any activity occurs in already added"
-                 " sockets.\n"));
+              _ ("MHD_add_connection() has been called for daemon started"
+                 " without MHD_USE_ITC flag.\nDaemon will not process newly"
+                 " added connection until any activity occurs in already"
+                 " added sockets.\n"));
   }
 #endif /* HAVE_MESSAGES */