Import C++ Standard Template Library

You can now use the hardest fastest and most dangerous language there is
with Cosmopolitan. So far about 75% of LLVM libcxx has been added. A few
breaking changes needed to be made to help this go smoothly.

- Rename nothrow to dontthrow
- Rename nodiscard to dontdiscard
- Add some libm functions, e.g. lgamma, nan, etc.
- Change intmax_t from int128 to int64 like everything else
- Introduce %jjd formatting directive for int128_t
- Introduce strtoi128(), strtou128(), etc.
- Rename bsrmax() to bsr128()

Some of the templates that should be working currently are std::vector,
std::string, std::map, std::set, std::deque, etc.

third_party/argon2/blake2b.c

@@ -39,7 +39,8 @@ static const uint64_t blake2b_IV[8] = {
     UINT64_C(0x6a09e667f3bcc908), UINT64_C(0xbb67ae8584caa73b),
     UINT64_C(0x3c6ef372fe94f82b), UINT64_C(0xa54ff53a5f1d36f1),
     UINT64_C(0x510e527fade682d1), UINT64_C(0x9b05688c2b3e6c1f),
-    UINT64_C(0x1f83d9abfb41bd6b), UINT64_C(0x5be0cd19137e2179)};
+    UINT64_C(0x1f83d9abfb41bd6b), UINT64_C(0x5be0cd19137e2179),
+};
 
 static const unsigned int blake2b_sigma[12][16] = {
     {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},