This is a POSIX wrapper for FreeRTOS.

Wiki page: http://www.opencircuits.com/Freertos_posix_Development

Imported from https://www.amonics.com.hk:9004/files/freertos_posix.zip as posted to https://interactive.freertos.org/hc/en-us/community/posts/210029046-POSIX-Wrapper-for-FreeRTOS

I'm just reposting it to GitHub after converting from SVN, as described.