Fix to compile and run on DMD v.2.061.1

Also turns out DMDScript was agressively non-64 bit.
I've fixed a number of tivial intergal size issues but stopped
at IR generator converting pointer to uint. It may happen that size_t will just work,
will look into it later.
Merge pull request #1 from DmitryOlshansky/compile-on-2.061.1

Fix to compile and run on DMD v.2.061.1
Fix regression - Math object not registered.
Move everything to dub. Not perfect but workable setup.

2 build scripts to run dub and copy over some files.
Will get rid of them once makes up its mind on building
all of subpackages in one go.
Fix deprecation warnings: switch fallthrough, empty statements, const --> enum.

Also make use of undead, start with regexp.
Build release by default
Switch to undead.date
Merge pull request #2 from DmitryOlshansky/fix-math

Fix regression - Math object not registered.
Merge pull request #3 from DmitryOlshansky/dubify

Dubify