Log message:
xxhash: updated to 0.7.4

xxHash v0.7.4 - Finalizing XXH3 and XXH128

xxHash v0.7.4 is the last evolution of xxh3 and xxh128, primarily designed to \ 
finalize the algorithm.
It is considered release candidate for v0.8.0, which means that if all goes \ 
right, this version will rebranded v0.8.0, almost "as is", within the \ 
next few weeks, after receiving sufficient feedback.
v0.8.0 is the official version after which XXH3 and XXH128 are considered \ 
"stabilized", meaning that return values will never change given the \ 
same input and seed, making the hash suitable for long-term storage and \ 
transmission.

Beyond these "final touches", the new version also brings a few \ 
notable improvements.

Log message:
xxhash: Update to 0.7.3. Fix installation of libs.

v0.7.3
- perf: improved speed for large inputs (~+20%)
- perf: improved latency for small inputs (~10%)
- perf: s390x Vectorial code, by @easyaspi314
- cli: improved support for Unicode filenames on Windows, thanks to @easyaspi314 \ 
and @t-mat
- api: `xxhash.h` can now be included in any order, with and without \ 
`XXH_STATIC_LINKING_ONLY` and `XXH_INLINE_ALL`
- build: xxHash's implementation transferred into `xxhash.h`. No more need to \ 
have `xxhash.c` in the `/include` directory for `XXH_INLINE_ALL` to work
- install: created pkg-config file, by @bket
- install: VCpkg installation instructions, by @LilyWangL
- doc: Highly improved code documentation, by @easyaspi314
- misc: New test tool in `/tests/collisions`: brute force collision tester for \ 
64-bit hashes

v0.7.2
- Fixed collision ratio of `XXH128` for some specific input lengths, reported by \ 
@svpv
- Improved `VSX` and `NEON` variants, by @easyaspi314
- Improved performance of scalar code path (`XXH_VECTOR=0`), by @easyaspi314
- `xxhsum`: can generate 128-bit hashes with the `-H2` option (note: for \ 
experimental purposes only! `XXH128` is not yet frozen)
- `xxhsum`: option `-q` removes status notifications

v0.7.1
- Secret first: the algorithm computation can be altered by providing a \ 
"secret", which is any blob of bytes, of size >= \ 
`XXH3_SECRET_SIZE_MIN`.
- `seed` is still available, and acts as a secret generator
- updated `ARM NEON` variant by @easyaspi314
- Streaming implementation is available
- Improve compatibility and performance with Visual Studio, with help from @aras-p
- Better integration when using `XXH_INLINE_ALL`: do not pollute host namespace, \ 
use its own macros, such as `XXH_ASSERT()`, `XXH_ALIGN`, etc.
- 128-bit variant provides helper functions for comparison of hashes.
- Better `clang` generation of `rotl` instruction, thanks to @easyaspi314
- `XXH_REROLL` build macro to reduce binary size, by @easyaspi314
- Improved `cmake` script, by @Mezozoysky
- Full benchmark program provided in `/tests/bench`

Log message:
devel/xxhash: Import xxhash 0.6.5.

xxHash is an Extremely fast Hash algorithm, running at RAM speed
limits. It successfully completes the SMHasher test suite which
evaluates collision, dispersion and randomness qualities of hash
functions.