Support for inline directives for let-bindings and return-ed
expressions, which enables the compiler to more aggressively inline
let-bindings generated by internal transformations such as
vectorization. And paves the way for source-level annotations.

Plus a bugfix in the vectorizer when combining the results of (>>>).
Cleaning up the ForceInline annotations to use their own data type.
Whitespace only.
Merge branch 'bug-correction' of github.com:dimitriv/Ziria into release
Added performance results XLS file
Merge branch 'release' of github.com:dimitriv/Ziria into mac