Hi guys,sys/unistd.h, sys/fcntl.h are not supported in AIX. And according to the POSIX.1-2008 (http://pubs.opengroup.org/onlinepubs/9699919799/), I have changed them to unistd.h and fcntl.h. The patch has been tested on both linux and aix.
I also change the header file in solaris, though I do not have a solaris machine on the hand. Hope it will not break the build :-)
The patch and webrev has been attached. -- Yours Charles
