Remove some evals from formula DSL

The default arguments were removed from these methods long ago, so
nothing is standing in the way of using define_method here.
wxmac: update 3.0.0 bottle.
wxmac: add comment
Make some constant strings into actual constants

We only need one copy of each of these strings, not ~7500.
Fix scantailor version comparison function
Remove support for version "schemes", just pass version objects directly

I'm not sure why I thought reinventing object instantiation was a good
idea.
--help and --version only apply as first argument

This fixes external commands that provide their own
help and version subcommands.

Closes #26755.
bfg: 1.11.6 (new formula)

BFG Repo-Cleaner removes large or troublesome blobs like
`git-filter-branch` does, but faster.
http://rtyley.github.io/bfg-repo-cleaner/

Closes #29562.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
nanopb-generator 0.2.7

Closes #28449

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
SeExpr 1.0.1 (new formula)

Closes #29617.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Added formula for dockutil 1.1.4
Explicitly install python dependencies, properly install dockutil to bin dirs
Using latest commit as tar archive
Use 1.1.4 tag instead of HEAD
Single Quotes => Double Quotes, inline install args
Only depend on python if <= Snow Leopard. Compatible with newest homebrew standards.
Removed python block
dockutil: add 1.1.4 bottle.