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/sosemanuk.h

@@ -0,0 +1,62 @@
+// sosemanuk.h - originally written and placed in the public domain by Wei Dai
+
+/// \file sosemanuk.h
+/// \brief Classes for Sosemanuk stream cipher
+/// \since Crypto++ 5.5
+
+#ifndef CRYPTOPP_SOSEMANUK_H
+#define CRYPTOPP_SOSEMANUK_H
+
+#include "strciphr.h"
+#include "secblock.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_SOSEMANUK_ASM 1
+#endif
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// \brief Sosemanuk stream cipher information
+/// \since Crypto++ 5.5
+struct SosemanukInfo : public VariableKeyLength<16, 1, 32, 1, SimpleKeyingInterface::UNIQUE_IV, 16>
+{
+	CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Sosemanuk";}
+};
+
+/// \brief Sosemanuk stream cipher implementation
+/// \since Crypto++ 5.5
+class SosemanukPolicy : public AdditiveCipherConcretePolicy<word32, 20>, public SosemanukInfo
+{
+protected:
+	std::string AlgorithmProvider() const;
+	void CipherSetKey(const NameValuePairs &params, const byte *key, size_t length);
+	void OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount);
+	void CipherResynchronize(byte *keystreamBuffer, const byte *iv, size_t length);
+	bool CipherIsRandomAccess() const {return false;}
+#if (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64)
+	unsigned int GetAlignment() const;
+	unsigned int GetOptimalBlockSize() const;
+#endif
+
+	FixedSizeSecBlock<word32, 25*4> m_key;
+	FixedSizeAlignedSecBlock<word32, 12> m_state;
+};
+
+/// \brief Sosemanuk stream cipher
+/// \details is a stream cipher developed by Come Berbain, Olivier Billet, Anne Canteaut, Nicolas Courtois,
+///   Henri Gilbert, Louis Goubin, Aline Gouget, Louis Granboulan, Cédric Lauradoux, Marine Minier, Thomas
+///   Pornin and Hervé Sibert. Sosemanuk is one of the final four Profile 1 (software) ciphers selected for
+///   the eSTREAM Portfolio.
+/// \sa <a href="http://www.cryptolounge.org/wiki/Sosemanuk">Sosemanuk</a>
+/// \since Crypto++ 5.5
+struct Sosemanuk : public SosemanukInfo, public SymmetricCipherDocumentation
+{
+	typedef SymmetricCipherFinal<ConcretePolicyHolder<SosemanukPolicy, AdditiveCipherTemplate<> >, SosemanukInfo> Encryption;
+	typedef Encryption Decryption;
+};
+
+NAMESPACE_END
+
+#endif