Archs: Add ARM64 and PPC64le

[ax3l]

Enable further architectures for builds. Officially supported platforms.

Notes:

• make needed explicitly for ARM and PPC images
• PPC64le CMake: Support OpenPower vector instruction set. Blosc/c-blosc#267

CMake Warning at CMakeLists.txt:253 (message):
  Unrecognized system processor ppc64le.  Cannot determine which hardware
  features (GNU 8.2.0) supports, so hardware-accelerated implementations will
  not be available.

• ARM64 CMake:

CMake Warning at CMakeLists.txt:253 (message):
  Unrecognized system processor aarch64.  Cannot determine which hardware
  features (GNU 7.3.0) supports, so hardware-accelerated implementations will
  not be available.

Checklist

• Used a fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[ax3l]

@conda-forge-admin, please rerender

[ax3l]

@conda-forge/blosc probably ready for a first merge, we can potentially fine-tune additional hardware acceleration later on Blosc/c-blosc#268

[danielfrg]

Thats awesome, thanks the PR!

[ax3l]

Thanks for merging! :)