ICU-20712 Add support for building Windows UWP ARM/ARM64 data DLLs.

This also changes the pkgdata tool command line options to decouple the
ARM/ARM64 flags from the UWP flag, and adds a generic architecture
option (-a) for passing in the value of the linker "/MACHINE:" argument
on the command line. (Ex: -a ARM64).

Additionally this change also adds another option to pkgdata (-b) to 
set /DYNAMICBASE on the data DLL, which is required for the ARM64 builds.

Both of these changes also work towards future work in order to enable
full ARM64 desktop builds without UWP.

This change also removes a number of ifdefs/forks in the ICU code based
on U_PLATFORM_HAS_WINUWP_API, and changes them to use ICU_DATA_DIR_WINDOWS
instead. This is needed to unblock the usage of the data DLL in the
UWP scenario, but also helps to further reduce the divergence of the UWP
projects from regular Windows builds.

Related tickets:
  ICU4C: Remove fixed DLL base addresses when building Windows DLLs
  https://unicode-org.atlassian.net/browse/ICU-20768

  Add support to generate ICU data DLL for Windows arm64
  https://unicode-org.atlassian.net/browse/ICU-20670

10 files changed
tree: 27d1c118d2d6990df1cafe7fbc24bdfd9e150a6c
  1. .appveyor.yml
  2. .ci-builds/
  3. .cpyskip.txt
  4. .gitattributes
  5. .github/
  6. .gitignore
  7. .travis.yml
  8. README.md
  9. docs/
  10. icu4c/
  11. icu4j/
  12. tools/
  13. vendor/
README.md

International Components for Unicode

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