Merge bitcoin/bitcoin#23494: build: minor boost tidyups

e734847c1f build: remove duplicate -fvisibility=hidden from Boost build (fanquake)
32659e5897 build: don't install Boost cmake config files (fanquake)

Pull request description:

  Don't install CMake config files we don't use.
  Remove duplicated `-fvisibility=hidden` flag.

  Guix build:
  ```bash
  bash-5.1# find guix-build-$(git rev-parse --short=12 HEAD)/output/ -type f -print0 | env LC_ALL=C sort -z | xargs -r0 sha256sum
  e7eeffd0df31f8e319e7f099d7c3ba8429b47c8d9f888517b146b0cf079470bc  guix-build-e734847c1f50/output/aarch64-linux-gnu/SHA256SUMS.part
  516c4703e84d74b80b22a2c8ef7f971ab269332d1394841f27cdca76013689f1  guix-build-e734847c1f50/output/aarch64-linux-gnu/bitcoin-e734847c1f50-aarch64-linux-gnu-debug.tar.gz
  4f2e279584d2f46ca3bdd9e67375bfd0a8637dfd183ccdf827248729ea69e858  guix-build-e734847c1f50/output/aarch64-linux-gnu/bitcoin-e734847c1f50-aarch64-linux-gnu.tar.gz
  28298c04b7810489a3be5471435ec63955d33cf57d4dc234e539ab95ba4dfe40  guix-build-e734847c1f50/output/arm-linux-gnueabihf/SHA256SUMS.part
  1a5d3245d982797d98ecfa2325da224b0814823c858ebaf56a6f310fe099b046  guix-build-e734847c1f50/output/arm-linux-gnueabihf/bitcoin-e734847c1f50-arm-linux-gnueabihf-debug.tar.gz
  ef79e545661f8e76811df5a9d1d9299c8cb35485b729377f07e789d559d2298d  guix-build-e734847c1f50/output/arm-linux-gnueabihf/bitcoin-e734847c1f50-arm-linux-gnueabihf.tar.gz
  f92bd538bd10dd7c09644e322d8c53536fde236ac16a0f5405becb3165685e68  guix-build-e734847c1f50/output/dist-archive/bitcoin-e734847c1f50.tar.gz
  56e7934800c630e91fee389ea9c8e95469deafafd58a8fb18616db13675dc51b  guix-build-e734847c1f50/output/powerpc64-linux-gnu/SHA256SUMS.part
  f15a2e7ad3d7be3ab9ee65f7a77df902c303d561b465fb22242bcfa47344be9c  guix-build-e734847c1f50/output/powerpc64-linux-gnu/bitcoin-e734847c1f50-powerpc64-linux-gnu-debug.tar.gz
  776ee33875d9934d9d472e9e735088bb9e9cf58bc9e29102a7a019a52deb28e3  guix-build-e734847c1f50/output/powerpc64-linux-gnu/bitcoin-e734847c1f50-powerpc64-linux-gnu.tar.gz
  19758310e0e19e17d57c59ba9fc4cbb350b64de0ddc050f85136043666b63c44  guix-build-e734847c1f50/output/powerpc64le-linux-gnu/SHA256SUMS.part
  90ad4e0b948e8bf58538f40f648420230e2357c3e2ae9aa331bac44fe98b1d71  guix-build-e734847c1f50/output/powerpc64le-linux-gnu/bitcoin-e734847c1f50-powerpc64le-linux-gnu-debug.tar.gz
  809a9a95dfa84fab4f365b687e68b58195a00810d6c9f3442c5b1155630d9515  guix-build-e734847c1f50/output/powerpc64le-linux-gnu/bitcoin-e734847c1f50-powerpc64le-linux-gnu.tar.gz
  3ea0563f95f3d6a2ecbdeb4ddf06187db1fbbf1dbabe77db38218f0c13a6dd2b  guix-build-e734847c1f50/output/riscv64-linux-gnu/SHA256SUMS.part
  1730fe70782024ae1558c9065361d4dc754683c6b5fecc420cf990c8b37a5f08  guix-build-e734847c1f50/output/riscv64-linux-gnu/bitcoin-e734847c1f50-riscv64-linux-gnu-debug.tar.gz
  720b6d6625c009e54d6a8b50e0dacdf7723374d52ace6a23874db6d3e540665d  guix-build-e734847c1f50/output/riscv64-linux-gnu/bitcoin-e734847c1f50-riscv64-linux-gnu.tar.gz
  bbf89e748b089ba68c50c9c03b81cb7f4b0517939dacd2e6a72d2480713c02c4  guix-build-e734847c1f50/output/x86_64-apple-darwin19/SHA256SUMS.part
  7a47bea38f3d8c19bb411bf4ab28bc4a237865184ddcb0677b3f240f4c5a2462  guix-build-e734847c1f50/output/x86_64-apple-darwin19/bitcoin-e734847c1f50-osx-unsigned.dmg
  6e10739840f56dedf0d1dfb9a788d539b87f5e79bf5a3eaacca97126cbf1c04e  guix-build-e734847c1f50/output/x86_64-apple-darwin19/bitcoin-e734847c1f50-osx-unsigned.tar.gz
  66c31edaa776e2a07225cc202a70fa3a3a745939b8c0ad2893cb86730869f118  guix-build-e734847c1f50/output/x86_64-apple-darwin19/bitcoin-e734847c1f50-osx64.tar.gz
  41aefbeacc4a09f89fbee35446b887c7fadfd17f833b1765fc2de3bec5fe4ce3  guix-build-e734847c1f50/output/x86_64-linux-gnu/SHA256SUMS.part
  30a7bfff7be3145e24637c9ab0b605cae0d2942aa6df2a1e7ac0afb22ec18792  guix-build-e734847c1f50/output/x86_64-linux-gnu/bitcoin-e734847c1f50-x86_64-linux-gnu-debug.tar.gz
  c7d91fbf09858bc5a573f169715bb1cddb046b2a7d62de73b26a952a92f918e7  guix-build-e734847c1f50/output/x86_64-linux-gnu/bitcoin-e734847c1f50-x86_64-linux-gnu.tar.gz
  e8ac5cf5360ceb8ee4550f43a5233c27a1265050d29c3a9b3b2ad136a77c80d4  guix-build-e734847c1f50/output/x86_64-w64-mingw32/SHA256SUMS.part
  079df526644fb001fc4500222f9775d3f7c2a39960bd81274bcb941748e8fbde  guix-build-e734847c1f50/output/x86_64-w64-mingw32/bitcoin-e734847c1f50-win-unsigned.tar.gz
  3d5a9855b4c5f330006c4a4213549f4bb40323778590b3300c827616004ad6de  guix-build-e734847c1f50/output/x86_64-w64-mingw32/bitcoin-e734847c1f50-win64-debug.zip
  182e1c668784e16ce73be3175c7bf59012eeae5673b507ab58b164ef670590ab  guix-build-e734847c1f50/output/x86_64-w64-mingw32/bitcoin-e734847c1f50-win64-setup-unsigned.exe
  34dc88b5898f4dcba8215a44b6ea545f05e9d7fa623fbb966ed27aeba35d0fdf  guix-build-e734847c1f50/output/x86_64-w64-mingw32/bitcoin-e734847c1f50-win64.zip
  ```

ACKs for top commit:
  hebasto:
    ACK e734847c1f, tested on Linux Mint 20.2 (x86_64) and on macOS Big Sur 11.6.1 (Intel, 20G224): `-fvisibility=hidden` is no longer duplicated in compiler invocations, and the resulted package has no the `lib/cmake/` directory.

Tree-SHA512: 2323801ce496884b2baa8e2699de74dcaefc02020c796f4185955fddeec84a9e02fdd35a6f225eea6569cb55a3dc5b11a9dcd1073073acb19a77eb4638854aff

depends/packages/boost.mk

@@ -23,7 +23,7 @@ else
 $(package)_toolset_$(host_os)=gcc
 endif
 $(package)_config_libraries=filesystem,system,test
-$(package)_cxxflags+=-std=c++17 -fvisibility=hidden
+$(package)_cxxflags+=-std=c++17
 $(package)_cxxflags_linux=-fPIC
 $(package)_cxxflags_android=-fPIC
 $(package)_cxxflags_x86_64_darwin=-fcf-protection=full
@@ -42,5 +42,5 @@ define $(package)_build_cmds
 endef
 
 define $(package)_stage_cmds
-  b2 -d0 -j4 --prefix=$($(package)_staging_prefix_dir) $($(package)_config_opts) toolset=$($(package)_toolset_$(host_os)) install
+  b2 -d0 -j4 --prefix=$($(package)_staging_prefix_dir) $($(package)_config_opts) toolset=$($(package)_toolset_$(host_os)) --no-cmake-config install
 endef