forked from Imagelibrary/rtems
* custom/Cygwin-posix.cfg, custom/FreeBSD-posix.cfg, custom/Linux-posix.cfg, custom/Solaris-posix.cfg, custom/posix.cfg: Remove.
* custom/Cygwin-posix.cfg, custom/FreeBSD-posix.cfg, custom/Linux-posix.cfg, custom/Solaris-posix.cfg, custom/posix.cfg: Remove.