layout: restructure into src/ tests/ android/ scripts/ tools/

- extension/src/{port,platform,codepage} -> src/; native_render -> src/host
  (+ dxt, shaders/); libgr2 -> src/gr2; extension/third_party -> third_party
- extension/tests -> tests/port, libgr2/tests -> tests/gr2
- android-native -> android (build.sh, push-client.sh moved in)
- script -> scripts; tools/40250 -> tools/server; oracle -> tools/granny-oracle;
  perf tools -> tools/perf
- all build trees under build/ (native, release, android, port-gate)
- xrender:: CMake aliases -> mt::; port-map ledger impl paths rewritten

No code changes. ctest 15/15, port_gate macos+android PASS, port_map check 0 errors.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

third_party/cpython-2.7.18/Parser/grammar1.c

@@ -0,0 +1,57 @@
+
+/* Grammar subroutines needed by parser */
+
+#include "Python.h"
+#include "pgenheaders.h"
+#include "grammar.h"
+#include "token.h"
+
+/* Return the DFA for the given type */
+
+dfa *
+PyGrammar_FindDFA(grammar *g, register int type)
+{
+    register dfa *d;
+#if 1
+    /* Massive speed-up */
+    d = &g->g_dfa[type - NT_OFFSET];
+    assert(d->d_type == type);
+    return d;
+#else
+    /* Old, slow version */
+    register int i;
+
+    for (i = g->g_ndfas, d = g->g_dfa; --i >= 0; d++) {
+        if (d->d_type == type)
+            return d;
+    }
+    assert(0);
+    /* NOTREACHED */
+#endif
+}
+
+char *
+PyGrammar_LabelRepr(label *lb)
+{
+    static char buf[100];
+
+    if (lb->lb_type == ENDMARKER)
+        return "EMPTY";
+    else if (ISNONTERMINAL(lb->lb_type)) {
+        if (lb->lb_str == NULL) {
+            PyOS_snprintf(buf, sizeof(buf), "NT%d", lb->lb_type);
+            return buf;
+        }
+        else
+            return lb->lb_str;
+    }
+    else {
+        if (lb->lb_str == NULL)
+            return _PyParser_TokenNames[lb->lb_type];
+        else {
+            PyOS_snprintf(buf, sizeof(buf), "%.32s(%.32s)",
+                _PyParser_TokenNames[lb->lb_type], lb->lb_str);
+            return buf;
+        }
+    }
+}