* Add support for building with MinGW
Tested with MSYS2 MinGW 8.3.0, gcc-mcf.lhmouse MinGW 9.2.1,
and StephanTLavavej/mingw-distro!
* Add MinGW toolchain
From your MinGW configured shell you could just use vcpkg to
configure packages.
An x64-mingw triplet would look like:
```
set(VCPKG_TARGET_ARCHITECTURE x64)
set(VCPKG_CRT_LINKAGE dynamic)
set(VCPKG_LIBRARY_LINKAGE static)
set(VCPKG_ENV_PASSTHROUGH PATH)
set(VCPKG_CMAKE_SYSTEM_NAME MinGW)
```
* Add MinGW community tripplets
x64 tested with https://github.com/StephanTLavavej/mingw-distro
x86, arm64, arm tested with https://github.com/mstorsjo/llvm-mingw
* [vcpkg_configure_cmake] Add NO_CHARSET_FLAG option
* [vcpkg_configure_cmake] Add documentation for new NO_CHARSET_FLAG option
* [vcpkg_configure_cmake, windows toolchain] Handle NO_CHARSET_FLAG in toolchain
* [build.cpp] Add Windows toolchain to package hash
* [duilib,msix,thrift,tidy-html5] Use NO_CHARSET_FLAG to fix regressions
* [vcpkg] Fix CMAKE_SYSTEM_PROCESSOR
Add CMAKE_SYSTEM_PROCESSOR setting under UWP, Linux, and Darwin.
If explicitly specified VCPKG_CMAKE_SYSTEM_PROCESSOR in triplet files, CMAKE_SYSTEM_PROCESSOR is set to specified architecture.
* [vcpkg-toolchains] Move logic out of vcpkg_configure_cmake and into the toolchains.
* [rocksdb] Update to v5.15.10
* [rocksdb] Cleanup
* [rocksdb] Fix cmake targets name.
* [toolchains] Set NDEBUG in release
* [rocksdb] Disable vcpkg_test_cmake due to misbehavior in x64
* [tiff] Use lzma on linux
