Make tests of URLs parallel

quickget

@@ -484,8 +484,8 @@ function test_all() {
                 test_result "${OS}" "${RELEASE}" "${EDITION}" "${URL}" "${CHECK}"
             fi
         fi
-    done
-    exit 0
+    done &
+    wait
 }
 
 function os_support() {
@@ -3427,8 +3427,10 @@ case "${1}" in
     shift
     if [ -z "${1}" ]; then
         for OS in $(os_support); do
-            (test_all "${OS}")
+            (test_all "${OS}") &
         done
+        wait
+        exit 0
     elif [ -z "${2}" ]; then
         test_all "${1}"
         exit 0
@@ -3439,8 +3441,10 @@ case "${1}" in
     shift
     if [ -z "${1}" ]; then
         for OS in $(os_support); do
-            (test_all "${OS}")
+            (test_all "${OS}") &
         done
+        wait
+        exit 0
     elif [ -z "${2}" ]; then
         test_all "${1}"
         exit 0