Raise SIGINT on Ctrl-C in REPL if under debugger
fix #6364: float ranges honor length if specified
Speed up symbol lookup by using hash has major key.
fix #6651, use promotion in clamp()
Merge pull request #6644 from ArchRobison/adr/fastsym

Speed up symbol lookup by using hash code as major key.
fix #6653
better regression test for #6653
Insert line after `.. doctest::`

Fixes HTML output and LaTeX build/output error.
Merge pull request #6598 from ihnorton/repl_sigint

SIGINT on Ctrl-C in REPL if under ptrace
Allow ^C to trap to debugger in release (OS X)
It has come to my attention that people who don't build their own tool chains
(there are such people?) don't have tools that understand DWARF 4.
Make methodswith check TypeVar.ub
Merge pull request #6658 from ihnorton/fix5722

Fix #5722 by making methodswith check TypeVar.ub
Closes #6631
Make USE_SYSTEM_LIBM work again
Merge pull request #6655 from rickhg12hs/minor_doc_fix

Insert line after `.. doctest::` in doc/manual/types.rst
Merge pull request #6613 from stevengj/rangelength

fix #6364: float ranges honor length if specified
Provide kron(sparse,dense) as discussed in #6647
Merge branch 'master' of github.com:JuliaLang/julia
Fix formatting error in performance-tips.rst