Decimal string to floating point conversion with correct half-to-even rounding

[Steven Schveighoffer]

On 7/7/20 1:37 PM, H. S. Teoh wrote:
> cf. the repeated
> problems we had over the years with libcurl, zlib, etc.

zlib is actually included copy-paste style in Phobos [1]. So it's 
interesting that you cite it as an example of causing problems because 
we don't include a copy of it.

-Steve

[1] 
https://github.com/dlang/phobos/tree/ea070e9a5c168de2e8460413e44bff1d406ff5c3/etc/c/zlib