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/cryptopp/whrlpool.h

@@ -0,0 +1,42 @@
+// whrlpool.h - originally modified by Kevin Springle from Paulo Barreto and Vincent Rijmen's
+//              public domain code, whirlpool.c. Updated to Whirlpool version 3.0, optimized
+//              and SSE version added by WD. All modifications are placed in the public domain.
+
+#ifndef CRYPTOPP_WHIRLPOOL_H
+#define CRYPTOPP_WHIRLPOOL_H
+
+/// \file whrlpool.h
+/// \brief Classes for the Whirlpool message digest
+/// \details Crypto++ provides version 3.0 of the Whirlpool algorithm.
+///   This version of the algorithm was submitted for ISO standardization.
+
+#include "config.h"
+#include "iterhash.h"
+
+// Clang 3.3 integrated assembler crash on Linux. Clang 3.4 due to compiler
+// error with .intel_syntax, http://llvm.org/bugs/show_bug.cgi?id=24232
+#if CRYPTOPP_BOOL_X32 || defined(CRYPTOPP_DISABLE_MIXED_ASM)
+# define CRYPTOPP_DISABLE_WHIRLPOOL_ASM 1
+#endif
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// \brief Whirlpool message digest
+/// \details Crypto++ provides version 3.0 of the Whirlpool algorithm.
+///   This version of the algorithm was submitted for ISO standardization.
+/// \since Crypto++ 5.2
+/// \sa <a href="http://www.cryptopp.com/wiki/Whirlpool">Whirlpool</a>
+class Whirlpool : public IteratedHashWithStaticTransform<word64, BigEndian, 64, 64, Whirlpool>
+{
+public:
+	CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Whirlpool";}
+	std::string AlgorithmProvider() const;
+
+	static void InitState(HashWordType *state);
+	static void Transform(word64 *digest, const word64 *data);
+	void TruncatedFinal(byte *hash, size_t size);
+};
+
+NAMESPACE_END
+
+#endif