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
diff --git a/tests/Android.mk b/tests/Android.mk
index e658b4d..5ee2596 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -59,7 +59,6 @@
     stack_protector_test.cpp \
     stack_unwinding_test.cpp \
     stack_unwinding_test_impl.c \
-    statvfs_test.cpp \
     stdio_test.cpp \
     stdlib_test.cpp \
     string_test.cpp \
@@ -71,9 +70,11 @@
     sys_select_test.cpp \
     sys_sendfile_test.cpp \
     sys_stat_test.cpp \
+    sys_statvfs_test.cpp \
     sys_syscall_test.cpp \
     sys_time_test.cpp \
     sys_types_test.cpp \
+    sys_vfs_test.cpp \
     system_properties_test.cpp \
     time_test.cpp \
     unistd_test.cpp \