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-mips64/syscalls/fstat.S b/libc/arch-mips64/syscalls/fstat64.S
similarity index 75%
rename from libc/arch-mips64/syscalls/fstat.S
rename to libc/arch-mips64/syscalls/fstat64.S
index 4c3e236..413d03b 100644
--- a/libc/arch-mips64/syscalls/fstat.S
+++ b/libc/arch-mips64/syscalls/fstat64.S
@@ -4,11 +4,11 @@
 #include <machine/asm.h>
 #include <machine/regdef.h>
     .text
-    .globl fstat
+    .globl fstat64
     .align 4
-    .ent fstat
+    .ent fstat64
 
-fstat:
+fstat64:
     .set push
     .set noreorder
     li v0, __NR_fstat
@@ -28,4 +28,7 @@
     j t9
     move ra, t0
     .set pop
-    .end fstat
+    .end fstat64
+
+    .globl _C_LABEL(fstat)
+    .equ _C_LABEL(fstat), _C_LABEL(fstat64)
diff --git a/libc/arch-mips64/syscalls/fstatat.S b/libc/arch-mips64/syscalls/fstatat64.S
similarity index 73%
rename from libc/arch-mips64/syscalls/fstatat.S
rename to libc/arch-mips64/syscalls/fstatat64.S
index 630debe..df00901 100644
--- a/libc/arch-mips64/syscalls/fstatat.S
+++ b/libc/arch-mips64/syscalls/fstatat64.S
@@ -4,11 +4,11 @@
 #include <machine/asm.h>
 #include <machine/regdef.h>
     .text
-    .globl fstatat
+    .globl fstatat64
     .align 4
-    .ent fstatat
+    .ent fstatat64
 
-fstatat:
+fstatat64:
     .set push
     .set noreorder
     li v0, __NR_newfstatat
@@ -28,4 +28,7 @@
     j t9
     move ra, t0
     .set pop
-    .end fstatat
+    .end fstatat64
+
+    .globl _C_LABEL(fstatat)
+    .equ _C_LABEL(fstatat), _C_LABEL(fstatat64)
diff --git a/libc/arch-mips64/syscalls/fstatfs.S b/libc/arch-mips64/syscalls/fstatfs64.S
similarity index 73%
rename from libc/arch-mips64/syscalls/fstatfs.S
rename to libc/arch-mips64/syscalls/fstatfs64.S
index 3e38227..2276299 100644
--- a/libc/arch-mips64/syscalls/fstatfs.S
+++ b/libc/arch-mips64/syscalls/fstatfs64.S
@@ -4,11 +4,11 @@
 #include <machine/asm.h>
 #include <machine/regdef.h>
     .text
-    .globl fstatfs
+    .globl fstatfs64
     .align 4
-    .ent fstatfs
+    .ent fstatfs64
 
-fstatfs:
+fstatfs64:
     .set push
     .set noreorder
     li v0, __NR_fstatfs
@@ -28,4 +28,7 @@
     j t9
     move ra, t0
     .set pop
-    .end fstatfs
+    .end fstatfs64
+
+    .globl _C_LABEL(fstatfs)
+    .equ _C_LABEL(fstatfs), _C_LABEL(fstatfs64)
diff --git a/libc/arch-mips64/syscalls/statfs.S b/libc/arch-mips64/syscalls/statfs64.S
similarity index 74%
rename from libc/arch-mips64/syscalls/statfs.S
rename to libc/arch-mips64/syscalls/statfs64.S
index 4711b1a..2fd7603 100644
--- a/libc/arch-mips64/syscalls/statfs.S
+++ b/libc/arch-mips64/syscalls/statfs64.S
@@ -4,11 +4,11 @@
 #include <machine/asm.h>
 #include <machine/regdef.h>
     .text
-    .globl statfs
+    .globl statfs64
     .align 4
-    .ent statfs
+    .ent statfs64
 
-statfs:
+statfs64:
     .set push
     .set noreorder
     li v0, __NR_statfs
@@ -28,4 +28,7 @@
     j t9
     move ra, t0
     .set pop
-    .end statfs
+    .end statfs64
+
+    .globl _C_LABEL(statfs)
+    .equ _C_LABEL(statfs), _C_LABEL(statfs64)