7129029: (fs) Unix file system provider should be buildable on platforms that don't support O_NOFOLLOW
Reviewed-by: alanb

7100054: (porting) Native code should include fcntl.h and unistd.h rather than sys/fcntl.h and sys/unistd.h
Summary: Use POSIX defined includes for unistd.h and fcntl.h
Reviewed-by: dholmes, alanb, chegar, ngmr
Contributed-by: NCharles Lee <littlee@linux.vnet.ibm.com>

7060790: (fs) FileSystem.newWatchService error message confusing when maximum inotify descriptors reached
Reviewed-by: forax

Reviewed-by: darcy, weijun

6844313: New I/O: File timestamps should be represented by a FileTime rather than a long+TimeUnit
Reviewed-by: sherman

4313887: New I/O: Improved filesystem interface
4607272: New I/O: Support asynchronous I/O
Reviewed-by: sherman, chegar