Drop uio support. Some newlibs do not have sys/uio.h.
Add VEDIS_DISABLE_MMAP macro. Some newlibs do not have mmap().
Add VEDIS_DISABLE_UTSNAME macro. Some newlibs do not have sys/utsname.h and uname().
Add description how to compile on newlib environment.
Add notification this repository is a forked.
Use run_test.rb instead of build_config.rb.
Do not build support/original branch.