Improve error messaging.

sourcepawn/compiler/tests/fail-bad-arg-decls.sp

@@ -0,0 +1,15 @@
+stock A(int)
+{
+}
+
+stock B(int[5] N)
+{
+}
+
+stock C(int:N)
+{
+}
+
+public main()
+{
+}

sourcepawn/compiler/tests/fail-bad-arg-decls.txt

@@ -0,0 +1,3 @@
+(1) : error 001: expected token: "-identifier-", but found ")"
+(5) : error 140: new-style array types cannot specify dimension sizes as part of their type
+(9) : error 001: expected token: "-identifier-", but found ":"

sourcepawn/compiler/tests/ok-new-decl-args.sp

@@ -23,16 +23,22 @@ stock E(E2 t)
 {
 }
 
-stock F(int n[10]) {
+stock F(const int n[10]) {
+}
+
+stock G(int& n)
+{
 }
 
 public main()
 {
   new x[10]
+  new t
   A(1)
   B(x)
   C(x)
   D(E1:5)
   E(E2:5)
   F(x)
+  G(t)
 }