ordinary parameters can follow a varargs parameter

tests/overload/tparams_after_varargs.nim

@@ -0,0 +1,17 @@
+discard """
+  output: '''a 1 b 2 x @[3, 4, 5] y 6 z 7
+yay
+12'''
+"""
+
+proc test(a, b: int, x: varargs[int]; y, z: int) =
+  echo "a ", a, " b ", b, " x ", @x, " y ", y, " z ", z
+
+test 1, 2, 3, 4, 5, 6, 7
+
+template takesBlock(a, b: int, x: varargs[expr]; blck: stmt) =
+  blck
+  echo a, b
+
+takesBlock 1, 2, "some", 0.90, "random stuff":
+  echo "yay"