Provides some of the missing POSIX file syscalls

src/trusted/service_runtime/include/bits/nacl_syscalls.h

Index: src/trusted/service_runtime/include/bits/nacl_syscalls.h
diff --git a/src/trusted/service_runtime/include/bits/nacl_syscalls.h b/src/trusted/service_runtime/include/bits/nacl_syscalls.h
index 88f6d2f7e8194c725f616933f3e1c3e32bd86f98..447387fc4636fd49edd02a8161b2664fdc41327b 100644
--- a/src/trusted/service_runtime/include/bits/nacl_syscalls.h
+++ b/src/trusted/service_runtime/include/bits/nacl_syscalls.h
@@ -31,7 +31,7 @@
 #define NACL_sys_stat                   16
 #define NACL_sys_fstat                  17
 #define NACL_sys_chmod                  18
-/* no fchmod emulation on windows */
+#define NACL_sys_fchmod                 19
 
 #define NACL_sys_brk                    20
 #define NACL_sys_mmap                   21
@@ -43,6 +43,9 @@
 
 #define NACL_sys_list_mappings          25
 
+#define NACL_sys_fsync                  26
+#define NACL_sys_fdatasync              27
+
 #define NACL_sys_exit                   30
 #define NACL_sys_getpid                 31
 #define NACL_sys_sched_yield            32
@@ -59,6 +62,17 @@
 #define NACL_sys_chdir                  47
 #define NACL_sys_getcwd                 48
 #define NACL_sys_unlink                 49
+#define NACL_sys_fchdir                 50
+
+#define NACL_sys_truncate               51
+#define NACL_sys_ftruncate              52
+#define NACL_sys_lstat                  53
+#define NACL_sys_link                   54
+#define NACL_sys_access                 55
+#define NACL_sys_rename                 56
+#define NACL_sys_readlink               57
+#define NACL_sys_symlink                58
+#define NACL_sys_utimes                 59
 
 /* 50-58 previously used for multimedia syscalls */