Add regresion test for continue-in-for

Just to ensure that the third part of the for loop (the updater expression list) is correctly run every iteration when 'continue' is used.

unit_tests/regression.suite/for-continue.lsl

@@ -0,0 +1,21 @@
+// Check that 'continue' executes the updater expression(s) in for loops
+
+integer x;
+
+f() inline
+{
+    ++x;
+}
+
+default
+{
+    timer()
+    {
+        for (x = 1; x < 5; f())
+        {
+            if (x == 3)
+                continue; // still executes f() but not llOwnerSay()
+            llOwnerSay((string)x);
+        }
+    }
+}

unit_tests/regression.suite/for-continue.out

@@ -0,0 +1,23 @@
+integer x;
+
+default
+{
+    timer()
+    {
+        x = 1;
+        @___for__00001;
+        if (x < 5)
+        {
+            {
+                if (x == 3)
+                    jump J_autoGen00002;
+                llOwnerSay((string)x);
+                @J_autoGen00002;
+            }
+            {
+                ++x;
+            }
+            jump ___for__00001;
+        }
+    }
+}

unit_tests/regression.suite/for-continue.run

@@ -0,0 +1 @@
+./main.py -O breakcont,inline -