Fix `using X` when X.jl is in working directory
make character predicates (isspace etc) work for strings arguments too (applying to each character in the string)
minor parallel doc additions
revert to multiplication for radian-degree conversion
patch #3167 and #3400, by fixing _methods() to return only methods that may actually get called for the argument tuple
add functions jl_breakpoint() and jl_() for easier debugging, (and
revert 2844b5e, after fixing it to use this debugging code)

`jl_(jl_value_t*)` prints any julia value, without calling any julia code (e.g. for when bootstrapping is broken)

`jl_breakpoint(jl_value_t*)` is a no-op function with Julia signature
`ccall(:jl_breakpoint, Void, (Any,), <anything>)`. It is intended that you
can put a breakpoint inside this function, for inspecting any value in the
code (with the `jl_` function above)
Merge pull request #4111 from amitmurthy/amitm/docupd

minor parallel doc additions
small manual edits
Pkg: add simplified BSD license option, wrap license text at 70.
Merge pull request #4112 from simonbyrne/sinpi

add sinpi cospi functions
fix crash in printing TypeConstructors

the problem is that when T isa TypeConstructor (made by `typealias`),
Type{T} and Type{T.body} are type-equal, but cannot be merged into the
same object without losing information (namely that T isa TypeConstructor).
instantiations of Type{} were handling this, but the type-cache comparison
predicate was not.
Merge branch 'master' of github.com:JuliaLang/julia
I/O Documentation

Remove some exports that shouldn't have been, document several I/O functions.
git ignores: tighten these up as they're a bit too inclusive.
Add deprecation fallback for add!(x::IntSet, y)
Pkg.scaffold(dir=<dir>): allow scaffolding with any name elsewhere.

This allows creation of new package scaffolding using the same code
that won't have any interaction with the existing registered or
installed packages as requested by @johnmyleswhite.
Merge branch 'master' of github.com:JuliaLang/julia
Document BigFloat functions
Don't leave BigFloat functions in UNDOCUMENTED
Merge pull request #4114 from simonbyrne/deg2rad

revert to multiplication for radian-degree conversion