Add an option to register a different handler to the Base.test module
Use a function instead of a macro to register the handler
Add `with_handler` to use a different handler in a local scope
Remove underline from the functions, export the Result types
Add documentation for the Test module
make import/using .Foo do a relative search for Foo, and the old syntax search from Main (the top level).
addresses #2375

this is quite disruptive, but I think I prefer it. after all, most of
the imports in Base are of internal modules, so they should be marked as
such.
fix inverse trig degree functions
Include lapack dependency, as the new OpenBLAS package no longer bundles LAPACK with itself.
Remove image.jl from extras/
Merge pull request #2765 from simonbyrne/master

Fix inverse trig degree-valued functions
fix #2766
Don't download/install patchelf if it is runnable from $PATH, and install/use it on Travis!
Add USE_SYSTEM_OPENLIBM, enable building of Julia with distribution-provided openlibm
Include openlibm packages in .travis.yml
fix the inconsistency described in #2763
this was a leftover from an older AST representation
Updates docs for publishing packages

Instructions to ensure that METADATA is up-to-date before registering a
new package.
Merge pull request #2769 from jiahao/doc-pkg-upd

Updates docs for publishing packages
Merge pull request #2767 from staticfloat/travis

Travis updates
Set: implement using a Dict{K,Nothing} instead of Dict{K,Bool}.

This is Jeff's brilliant idea: since we store Array{Nothing} using
zero space because there's only one possible Nothing value, this is
a way to use the Dict implementation for sets without wasting space
storing the array of values.
fix #2775, restore long versions of command line opts