Policy for Accepting Assembler Optimisations

New assembler optimisations for any algorithm having a C based implementation in any provider are always acceptable (subject to standard review procedures) for all platforms in the master branch.

New assembler optimisations are never acceptable for any platform or provider in a stable release branch.

Updates to existing assembler optimisations in a stable release branch are only acceptable where such updates would be allowed under the stable release update policy.

Where assembler optimisations are acceptable they should be implemented using perlasm.