Implement some of the missing LFS64 support.

This gives us:

* <dirent.h>
  struct dirent64
  readdir64, readdir64_r, alphasort64, scandir64

* <fcntl.h>
  creat64, openat64, open64.

* <sys/stat.h>
  struct stat64
  fstat64, fstatat64, lstat64, stat64.

* <sys/statvfs.h>
  struct statvfs64
  statvfs64, fstatvfs64.

* <sys/vfs.h>
  struct statfs64
  statfs64, fstatfs64.

This also removes some of the incorrect #define hacks we've had in the
past (for stat64, for example, which we promised to clean up way back
in bug 8472078).

Bug: 11865851
Bug: 8472078
Change-Id: Ia46443521918519f2dfa64d4621027dfd13ac566
Merge "Implement some of the missing LFS64 support."
Add missing file from previous change.

Change-Id: Id25000162a9ed76ce756842bdc09fe9afff9528f
Merge "Add missing file from previous change."
Fix build by avoiding the _C_LABEL macro.

Change-Id: Ide367c2b65071388bd95fbc81a4ed6ae94aec4e4
Use uid_t and gid_t for st_uid and st_gid in struct stat.

Change-Id: Ide62dc714d76d881e3aa79e7a59ee6533a23dd00
Merge "Fix build by avoiding the _C_LABEL macro."
Merge "Use uid_t and gid_t for st_uid and st_gid in struct stat."
Merge branch 'master' of https://android.googlesource.com/platform/bionic into HEAD