More symbol exports and C-API example
base/bool.jl: `-0.0 + false === -0.0`.
Fix jl_apply_array_type (root boxed dim)
add norm=... keyword argument to quadgk for changing the desired error norm (see JuliaLang/ODE.jl#7)
- split and rsplit return SubStrings
- faster specialized bytestring for SubString
- updated split usage that depended on old behavior
- updated docs
base/pkg/git.jl: don't shell out to find .git dir [fixes #4888]
Fix #5586
Tweak tar finding code again
sharedarray - exported sdata, indexpids, subtype changes
Merge pull request #5568 from amitmurthy/amitm/shmem_changes

sharedarray - exported sdata, indexpids. subtype of DenseArray
fix #5584

we were missing a root for a tuple boxed as a function argument
Fix #5587 (quickfix)

Check that the numbers from git are not empty strings before pasting
them into `version_git.jl`.
Merge pull request #5590 from ivarne/quickfix_5587

Fix #5587 (quickfix)
NEWS updates for nextfloat, prevfloat, and setenv
note readline() defaults to STDIN
update helpdb.jl
Merge pull request #5492 from JuliaLang/sk/complex-fix-2

base/bool.jl: `-0.0 + false === -0.0`.
Merge pull request #5451 from tanmaykm/tanmaykm

Faster bytestring for SubString{ByteString} and splitsub to split into substrings
base/linalg/lapack.jl: SingularException, not SingularError.
Merge pull request #5593 from mschauer/singular

Typo: SingularException, not SingularError.