Merge branch 'collectd-4.8' into collectd-4.9

Conflicts:

	src/ping.c

diff --cc configure.in
Simple merge

diff --cc src/apache.c
Simple merge

diff --cc src/collectd.conf.in
Simple merge

diff --cc src/collectd.conf.pod
Simple merge

diff --cc src/exec.c
Simple merge

diff --cc src/ping.c
index 5366b98fbcc1d309be5b4161c82f5dd9ca23ff85,5187e2b7c4e8dca90153c4ebec5f43b3fcd23d9e..b536f42966639f4d7e3ca260e238b7944440294f
--- 1/src/ping.c
--- 2/src/ping.c
+++ b/src/ping.c
@@@ -181,18 -154,19 +181,19 @@@ static void *ping_thread (void *arg) /
    ping_setopt (pingobj, PING_OPT_TTL, (void *) &ping_ttl);
  
    /* Add all the hosts to the ping object. */
 -  status = 0;
 +  count = 0;
    for (hl = hostlist_head; hl != NULL; hl = hl->next)
    {
-     int status;
-     status = ping_host_add (pingobj, hl->host);
-     if (status != 0)
-       WARNING ("ping plugin: ping_host_add (%s) failed.", hl->host);
+     int tmp_status;
+     tmp_status = ping_host_add (pingobj, hl->host);
+     if (tmp_status != 0)
+       WARNING ("ping plugin: ping_host_add (%s) failed: %s",
+           hl->host, ping_get_error (pingobj));
      else
 -      status++;
 +      count++;
    }
  
 -  if (status == 0)
 +  if (count == 0)
    {
      ERROR ("ping plugin: No host could be added to ping object. Giving up.");
      ping_thread_error = 1;

diff --cc src/plugin.c
index 182892a94bcea3343dbd7c067676168d4d62a7b2,c163ca7df81c178fec29f97a595e54180ee75090..1eed532c1c510553d7026111d6489fccea30360a
--- 1/src/plugin.c
--- 2/src/plugin.c
+++ b/src/plugin.c
@@@ -331,9 -317,10 +338,10 @@@ static void *plugin_read_thread (void _
                struct timeval now;
                int status;
                int rf_type;
+               int rc;
  
                /* Get the read function that needs to be read next. */
 -              rf = c_head_get_root (read_heap);
 +              rf = c_heap_get_root (read_heap);
                if (rf == NULL)
                {
                        struct timespec abstime;