[v6.d REVIEW] Expand infix:<~> with Blob tests
[v6.d REVIEW] Expand infix:<~> with Blob tests

- Test both return and result of meta assign
- Test other forms of the op
Origs:
https://github.com/perl6/roast/commit/a85c4b4b8c58de8d6de311a8937497c972f0bf97
https://github.com/perl6/roast/commit/7073efe39add5c11469595c6723522990eb6d12e

dogbert17/roast,perl6/roast,dogbert17/roast