Renamed several tests.

test/val/decl-static-extern.c

@@ -0,0 +1,21 @@
+/*
+  !!DESCRIPTION!! global non-static and static conflicts
+  !!ORIGIN!!      cc65 regression tests
+  !!LICENCE!!     Public Domain
+  !!AUTHOR!!      Greg King
+*/
+
+/*
+  see: https://github.com/cc65/cc65/issues/191
+*/
+
+#pragma warn(error, on)
+
+static int n = 0;
+extern int n;           /* should not give an error */
+static int n;           /* should not give an error */
+
+int main(void)
+{
+    return n;
+}