Newlib 2.3.0 is released

[Jeff Johnston]

The latest snapshot is on the ftp-site.

Thanks to Corinna who reviewed the vast majority of patches on the mailing list and thanks to all who
contributed/reviewed patches.

*** Major changes in newlib version 2.3.0:

- dynamic atexit logic fixed
- various arm performance enhancements
- new version of strtold
- doc improvements
- arc platform support redone
- strftime improvements/enhancements
- imported logic from FreeBSD
- locking fixes
- complex math enhancements
- visium platform support added
- or1k platform support added

Regards,

-- Jeff J.