according to the rules defined here:
http://pubs.opengroup.org/onlinepubs/009695399/basedefs/limits.h.html
add the definition for HOST_NAME_MAX to limits.h file,
and set the default value to _POSIX_HOST_NAME_MAX as 255
Change-Id: Iddd5c6c569f4e0a14994c7a7c54985f3e7809fc4
Signed-off-by: Yongqin Liu <yongqin.liu@linaro.org>
fpathconf(3) and pathconf(3) can share code. There's no such
header file as <pathconf.h>. glibc/POSIX and BSD disagree about where
the _POSIX_* definitions should go.
Change-Id: I4a67f1595c9f5fbb26700a131178eedebd6bf712
