[Picolibc] Version 1.7.7

[Keith Packard]

### Picolibc version 1.7.7

 1. Fix semihost gettimeofday, add a test.

 2. Fix config option documentation. (Thanks to rdiez)

 3. Document how re-entrant locking APIs are used. (Thanks to rdiez)

 4. Fix some 16-bit int issues in tinystdio. (Thanks to Ayke van
    Laethem)

 5. Make header files a bit more POSIX compliant, installing rpc
    headers, moving byte swapping macros to arpa/inet.h

 6. Fix some stdio bugs found by Zephyr test suite: snprintf return
    value on buffer overflow, add ftello/fseeko, fputc return value,
    %0a formatting, clear EOF status after ungetc/fseek.

 7. Re-do buffered I/O support to handle mixed read/write files
    correctly. This adds setbuf, setbuffer, setlinebuf, setvbuf.

 8. Add fmemopen and freopen.

 9. Add enough cmake support to allow Zephyr to build picolibc as a
    module using that, rather than meson.

 10. Merge current newlib bits
 
 11. Fix %p printf/scanf on ILP64 targets.

-- 
-keith
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 832 bytes
Desc: not available
URL: <http://keithp.com/pipermail/picolibc/attachments/20220521/84a69a15/attachment.sig>