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/Lib/compiler/consts.py

@@ -0,0 +1,23 @@
+# operation flags
+OP_ASSIGN = 'OP_ASSIGN'
+OP_DELETE = 'OP_DELETE'
+OP_APPLY = 'OP_APPLY'
+
+SC_LOCAL = 1
+SC_GLOBAL_IMPLICIT = 2
+SC_GLOBAL_EXPLICIT = 3
+SC_FREE = 4
+SC_CELL = 5
+SC_UNKNOWN = 6
+
+CO_OPTIMIZED = 0x0001
+CO_NEWLOCALS = 0x0002
+CO_VARARGS = 0x0004
+CO_VARKEYWORDS = 0x0008
+CO_NESTED = 0x0010
+CO_GENERATOR = 0x0020
+CO_GENERATOR_ALLOWED = 0
+CO_FUTURE_DIVISION = 0x2000
+CO_FUTURE_ABSIMPORT = 0x4000
+CO_FUTURE_WITH_STATEMENT = 0x8000
+CO_FUTURE_PRINT_FUNCTION = 0x10000