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/libc/arch-arm/syscalls/fstat.S b/libc/arch-arm/syscalls/fstat64.S
similarity index 71%
rename from libc/arch-arm/syscalls/fstat.S
rename to libc/arch-arm/syscalls/fstat64.S
index cf08d08..4eceb8f 100644
--- a/libc/arch-arm/syscalls/fstat.S
+++ b/libc/arch-arm/syscalls/fstat64.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fstat)
+ENTRY(fstat64)
     mov     ip, r7
     ldr     r7, =__NR_fstat64
     swi     #0
@@ -11,4 +11,7 @@
     bxls    lr
     neg     r0, r0
     b       __set_errno
-END(fstat)
+END(fstat64)
+
+    .globl _C_LABEL(fstat)
+    .equ _C_LABEL(fstat), _C_LABEL(fstat64)
diff --git a/libc/arch-arm/syscalls/fstatat.S b/libc/arch-arm/syscalls/fstatat64.S
similarity index 69%
rename from libc/arch-arm/syscalls/fstatat.S
rename to libc/arch-arm/syscalls/fstatat64.S
index 7cc9bb0..e919efe 100644
--- a/libc/arch-arm/syscalls/fstatat.S
+++ b/libc/arch-arm/syscalls/fstatat64.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fstatat)
+ENTRY(fstatat64)
     mov     ip, r7
     ldr     r7, =__NR_fstatat64
     swi     #0
@@ -11,4 +11,7 @@
     bxls    lr
     neg     r0, r0
     b       __set_errno
-END(fstatat)
+END(fstatat64)
+
+    .globl _C_LABEL(fstatat)
+    .equ _C_LABEL(fstatat), _C_LABEL(fstatat64)