Some non-glibc systems didn't have libio.h or __BEGIN_DECLS Changes to make it more standard. References: issue #88
The procio functions that were in the library have been moved into sysctl. sysctl is not linked to libprocps in newlib and none of the other procps binaries would need to read/write large data to the procfs. References: be6b048a41
be6b048a41