(r260311).
With a small revision (r264121) which was MFCd to 10.0-STABLE as
r264214, our base GCC got the capacity to build more blocks application
cleanly.
This support is important for platforms lack support for clang like
ia64, powerpc and sparc64.
The attached patch:
- Overrides the clang port option in platforms that ship a valid
block-enabled compiler in base.
- Let's platforms like powerpc and sparc use the base compiler.
- Adds license information for libdispatch (Apache License 2.0)
PR: 188332
Submitted by: Pedro F. Giffuni <pfg@FreeBSD.org>
306ed3e55a