Fix thread count for modern AMD CPUs

v1.2.2

fix byte order for amd LeafExt1EInformation

Hygon CPU Support, crt_constructor update

crt_constructor is used now for any compilation mode and compiler.

C Runtime constructors and purity

1. crt_constructor is used by default when compiled with LDC or with BetterC flag.
2. Basic global methods are pure now.
3. DMD betterC regression with bitfields has been workarounds.
4. mir-algorithm dependency is updated to v2.0.6

update dub dependency tags

v0.5.3

Update dub.json

Update to Mir v0.5.0

v0.5.1

Update dub.json

Building a betterC library

dub build --compiler=ldmd2 --build=betterC --build-mode=singleFile --parallel

The size of library is only 23 KB. It does not contain any template bloat.