introduce wait() semantics to all success() variants
fix warning about T in tests
RadixSort: fix fpsort!, add to floating point tests
add convert(Float32, Float16)
basic soft float16 support
Merge pull request #3979 from kmsquire/radix_sort

RadixSort: fix fpsort!, add to floating point tests
Fix #3960
Merge pull request #3977 from nlhepler/lh/success

introduce wait() semantics to all success() variants
add float16 to testall
Merge github.com:JuliaLang/julia
remove float16 stub C code
Merge pull request #3980 from JuliaLang/mn/float16

[RFC] basic float16 support (closes #3467)
merge wait_success and success into just success
merge wait_exit and wait into just wait
  wait(Process) and wait(ProcessChain) both work but return nothing;
  you have to inspect p.exitcode to see what happened.
remove process_exit_status and process_term_signal
de-underscore exit_code and term_signal
Merge branch 'master' of github.com:JuliaLang/julia
test/sorting.jl: test searchsorted not *{first,last}; use for loops.
added new base64(...) function to base64-encode binary data, along with a Base64Pipe <: IO type
add multimedia I/O mechanism (display, mm_write, and friends)
fix #3946 (strings test error on windows)
document interrupt()
fix #3982 (printf e/E failing)