BUILD/MINOR: tools: rename popcount to my_popcountl

This is in order to avoid conflicting with NetBSD popcount* functions
since 6.x release, the final l to mentions the argument is a long like
NetBSD does.

This patch could be backported to 1.5 to fix the build issue there as well.
(cherry picked from commit e6c39416682863d1eaee3acd45ccaadf96f76b12)
diff --git a/src/cfgparse.c b/src/cfgparse.c
index 58826f5..2a5f178 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -6130,7 +6130,7 @@
 			/* an explicit bind-process was specified, let's check how many
 			 * processes remain.
 			 */
-			nbproc = popcount(curproxy->bind_proc);
+			nbproc = my_popcountl(curproxy->bind_proc);
 
 			curproxy->bind_proc &= nbits(global.nbproc);
 			if (!curproxy->bind_proc && nbproc == 1) {
@@ -6155,7 +6155,7 @@
 				mask &= curproxy->bind_proc;
 			/* mask cannot be null here thanks to the previous checks */
 
-			nbproc = popcount(bind_conf->bind_proc);
+			nbproc = my_popcountl(bind_conf->bind_proc);
 			bind_conf->bind_proc &= mask;
 
 			if (!bind_conf->bind_proc && nbproc == 1) {
@@ -7092,7 +7092,7 @@
 				mask &= bind_conf->bind_proc;
 
 			/* stop here if more than one process is used */
-			if (popcount(mask) > 1)
+			if (my_popcountl(mask) > 1)
 				break;
 		}
 		if (&bind_conf->by_fe != &global.stats_fe->conf.bind) {
@@ -7155,7 +7155,7 @@
 		unsigned int next_id;
 		int nbproc;
 
-		nbproc = popcount(curproxy->bind_proc & nbits(global.nbproc));
+		nbproc = my_popcountl(curproxy->bind_proc & nbits(global.nbproc));
 
 #ifdef USE_OPENSSL
 		/* Configure SSL for each bind line.
@@ -7272,7 +7272,7 @@
 				int count, maxproc = 0;
 
 				list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
-					count = popcount(bind_conf->bind_proc);
+					count = my_popcountl(bind_conf->bind_proc);
 					if (count > maxproc)
 						maxproc = count;
 				}
@@ -7421,13 +7421,13 @@
 				Warning("Removing incomplete section 'peers %s' (no peer named '%s').\n",
 					curpeers->id, localpeer);
 			}
-			else if (popcount(curpeers->peers_fe->bind_proc) != 1) {
+			else if (my_popcountl(curpeers->peers_fe->bind_proc) != 1) {
 				/* either it's totally stopped or too much used */
 				if (curpeers->peers_fe->bind_proc) {
 					Alert("Peers section '%s': peers referenced by sections "
 					      "running in different processes (%d different ones). "
 					      "Check global.nbproc and all tables' bind-process "
-					      "settings.\n", curpeers->id, popcount(curpeers->peers_fe->bind_proc));
+					      "settings.\n", curpeers->id, my_popcountl(curpeers->peers_fe->bind_proc));
 					cfgerr++;
 				}
 				stop_proxy(curpeers->peers_fe);