clean up and export crc32c function#22274

Merged

stevengj merged 14 commits intoJuliaLang:masterfrom stevengj:crc

Jun 13, 2017

+93-19

Commits on Jun 8, 2017

docs typo
stevengj
committed
crc32c(IOBuffer) bugfix and test
stevengj
committed
restore crc32 of String, add crc32c(io) to read all of a stream, add optimized open(crc32c, filename), make IOBuffer checksums consistent with other streams
stevengj
committed

Commits on Jun 9, 2017

Commits on Jun 12, 2017

slight simplification/generalization
stevengj
committed
eliminate theoretical race condition in crc32c if file is being written to while we are reading from it
stevengj
committed