used new enums, changed location of GITHUB_REGEX, exported PkgError

Author: wildart

base/pkg.jl

@@ -5,7 +5,7 @@ module Pkg
 export Dir, GitHub, Types, Reqs, Cache, Read, Query, Resolve, Write, Generate, Entry
 export dir, init, rm, add, available, installed, status, clone, checkout,
        update, resolve, register, tag, publish, generate, test,
-       build, free, pin
+       build, free, pin, PkgError
 
 const DEFAULT_META = "https://github.com/JuliaLang/METADATA.jl"
 const META_BRANCH = "metadata-v2"