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/3way.h

@@ -0,0 +1,63 @@
+// 3way.h - originally written and placed in the public domain by Wei Dai
+
+/// \file 3way.h
+/// \brief Classes for the 3-Way block cipher
+
+#ifndef CRYPTOPP_THREEWAY_H
+#define CRYPTOPP_THREEWAY_H
+
+#include "config.h"
+#include "seckey.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// \brief ThreeWay block cipher information
+struct ThreeWay_Info : public FixedBlockSize<12>, public FixedKeyLength<12>, public VariableRounds<11>
+{
+	CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "3-Way";}
+};
+
+/// \brief ThreeWay block cipher
+/// \sa <a href="http://www.cryptopp.com/wiki/3-Way">3-Way</a>
+class ThreeWay : public ThreeWay_Info, public BlockCipherDocumentation
+{
+	/// \brief Class specific implementation and overrides used to operate the cipher.
+	/// \details Implementations and overrides in \p Base apply to both \p ENCRYPTION and \p DECRYPTION directions
+	class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<ThreeWay_Info>
+	{
+	public:
+		void UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs &params);
+
+	protected:
+		unsigned int m_rounds;
+		FixedSizeSecBlock<word32, 3> m_k;
+	};
+
+	/// \brief Class specific methods used to operate the cipher in the forward direction.
+	/// \details Implementations and overrides in \p Enc apply to \p ENCRYPTION.
+	class CRYPTOPP_NO_VTABLE Enc : public Base
+	{
+	public:
+		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+	};
+
+	/// \brief Class specific methods used to operate the cipher in the reverse direction.
+	/// \details Implementations and overrides in \p Dec apply to \p DECRYPTION.
+	class CRYPTOPP_NO_VTABLE Dec : public Base
+	{
+	public:
+		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+	};
+
+public:
+	typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
+	typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
+};
+
+typedef ThreeWay::Encryption ThreeWayEncryption;
+typedef ThreeWay::Decryption ThreeWayDecryption;
+
+NAMESPACE_END
+
+#endif