Irix 6 specific files -- thanks Sjoerd!
diff --git a/Lib/plat-irix6/FILE.py b/Lib/plat-irix6/FILE.py
new file mode 100644
index 0000000..e3393b6
--- /dev/null
+++ b/Lib/plat-irix6/FILE.py
@@ -0,0 +1,236 @@
+# Generated by h2py from /usr/include/sys/file.h
+
+# Included from standards.h
+
+# Included from sys/types.h
+
+# Included from sgidefs.h
+_MIPS_ISA_MIPS1 = 1
+_MIPS_ISA_MIPS2 = 2
+_MIPS_ISA_MIPS3 = 3
+_MIPS_ISA_MIPS4 = 4
+_MIPS_SIM_ABI32 = 1
+_MIPS_SIM_NABI32 = 2
+_MIPS_SIM_ABI64 = 3
+P_MYID = (-1)
+P_MYHOSTID = (-1)
+
+# Included from sys/bsd_types.h
+
+# Included from sys/mkdev.h
+ONBITSMAJOR = 7
+ONBITSMINOR = 8
+OMAXMAJ = 0x7f
+OMAXMIN = 0xff
+NBITSMAJOR = 14
+NBITSMINOR = 18
+MAXMAJ = 0x1ff
+MAXMIN = 0x3ffff
+OLDDEV = 0
+NEWDEV = 1
+MKDEV_VER = NEWDEV
+def major(dev): return __major(MKDEV_VER, dev)
+
+def minor(dev): return __minor(MKDEV_VER, dev)
+
+
+# Included from sys/select.h
+FD_SETSIZE = 1024
+__NBBY = 8
+
+# Included from string.h
+NULL = 0L
+NBBY = 8
+
+# Included from sys/sema.h
+MUTEX_DEFAULT = 0x0
+METER_NAMSZ = 8
+def mutex_spinlock(l): return splhi()
+
+def mutex_spintrylock(l): return splhi()
+
+def spinlock_islocked(l): return issplhi(getsr())
+
+def spinlock_initialized(l): return 1
+
+SV_FIFO = 0x0
+SV_LIFO = 0x2
+SV_PRIO = 0x4
+SV_DEFAULT = SV_FIFO
+SEMA_NOHIST = 0x0001
+SEMA_LOCK = 0x0004
+SEMA_METER = 0x0008
+SEMA_NAMSZ = METER_NAMSZ
+MR_ACCESS = 0x1
+MR_UPDATE = 0x2
+def mp_mutex_unlock(m): return mutex_unlock(m)
+
+def mp_mutex_trylock(m): return mutex_trylock(m)
+
+def mp_mutex_spinlock(m): return mutex_spinlock(m)
+
+def mp_mutex_trylock(m): return 1
+
+def mp_mutex_spinlock(m): return 1
+
+def nested_spintrylock(m): return 1
+
+def mp_mrunlock(a): return mrunlock(a)
+
+def mp_cpsema(x): return cpsema(x)
+
+def mp_cvsema(x): return cvsema(x)
+
+def mp_cpsema(x): return 1
+
+def mp_cvsema(x): return 0
+
+MON_LOCKED = 0x01
+MON_WAITING = 0x02
+MON_TIMEOUT = 0x04
+def initlock(l): return spinlock_init(l,0)
+
+def ownlock(x): return 1
+
+def splock(x): return 1
+
+def io_splock(x): return 1
+
+def mutex_enter(m): return mutex_lock(m, PZERO)
+
+def mutex_tryenter(m): return mutex_trylock(m)
+
+def mutex_exit(m): return mutex_unlock(m)
+
+def cv_signal(cv): return sv_signal(cv)
+
+def cv_broadcast(cv): return sv_broadcast(cv)
+
+def cv_destroy(cv): return sv_destroy(cv)
+
+RW_READER = MR_ACCESS
+RW_WRITER = MR_UPDATE
+def rw_exit(r): return mrunlock(r)
+
+def rw_tryupgrade(r): return cmrpromote(r)
+
+def rw_downgrade(r): return mrdemote(r)
+
+def rw_destroy(r): return mrfree(r)
+
+def RW_WRITE_HELD(r): return ismrlocked(r, MR_UPDATE)
+
+def RW_READ_HELD(r): return ismrlocked(r, MR_ACCESS)
+
+
+# Included from sys/fcntl.h
+FNDELAY = 0x04
+FAPPEND = 0x08
+FSYNC = 0x10
+FDSYNC = 0x20
+FRSYNC = 0x40
+FNONBLOCK = 0x80
+FASYNC = 0x1000
+FLARGEFILE = 0x2000
+FNONBLK = FNONBLOCK
+FDIRECT = 0x8000
+FDIRENT64 = 0x8000
+FCREAT = 0x0100
+FTRUNC = 0x0200
+FEXCL = 0x0400
+FNOCTTY = 0x0800
+O_RDONLY = 0
+O_WRONLY = 1
+O_RDWR = 2
+O_NDELAY = 0x04
+O_APPEND = 0x08
+O_SYNC = 0x10
+O_DSYNC = 0x20
+O_RSYNC = 0x40
+O_NONBLOCK = 0x80
+O_LARGEFILE = 0x2000
+O_DIRECT = 0x8000
+O_CREAT = 0x100
+O_TRUNC = 0x200
+O_EXCL = 0x400
+O_NOCTTY = 0x800
+F_DUPFD = 0
+F_GETFD = 1
+F_SETFD = 2
+F_GETFL = 3
+F_SETFL = 4
+F_GETLK = 14
+F_SETLK = 6
+F_SETLKW = 7
+F_CHKFL = 8
+F_ALLOCSP = 10
+F_FREESP = 11
+F_SETBSDLK = 12
+F_SETBSDLKW = 13
+F_DIOINFO = 30
+F_FSGETXATTR = 31
+F_FSSETXATTR = 32
+F_GETLK64 = 33
+F_SETLK64 = 34
+F_SETLKW64 = 35
+F_ALLOCSP64 = 36
+F_FREESP64 = 37
+F_GETBMAP = 38
+F_FSSETDM = 39
+F_RESVSP = 40
+F_UNRESVSP = 41
+F_RESVSP64 = 42
+F_UNRESVSP64 = 43
+F_GETBMAPA = 44
+F_FSGETXATTRA = 45
+F_GETALLLK = 46
+F_RSETLK = 20
+F_RGETLK = 21
+F_RSETLKW = 22
+F_GETOWN = 23
+F_SETOWN = 24
+F_RDLCK = 01
+F_WRLCK = 02
+F_UNLCK = 03
+O_ACCMODE = 3
+FD_CLOEXEC = 1
+FD_NODUP_FORK = 4
+FMASK = 0x90FF
+FOPEN = 0xFFFFFFFF
+FREAD = 0x01
+FWRITE = 0x02
+FNDELAY = 0x04
+FAPPEND = 0x08
+FSYNC = 0x10
+FDSYNC = 0x20
+FRSYNC = 0x40
+FNONBLOCK = 0x80
+FASYNC = 0x1000
+FNONBLK = FNONBLOCK
+FLARGEFILE = 0x2000
+FDIRECT = 0x8000
+FCREAT = 0x0100
+FTRUNC = 0x0200
+FEXCL = 0x0400
+FNOCTTY = 0x0800
+FMARK = 0x4000
+FDEFER = 0x2000
+FINPROGRESS = 0x0400
+FINVIS = 0x0100
+FNMFS = 0x2000
+FDIRENT64 = 0x8000
+FCLOSEXEC = 001
+FDSHD = 0x0001
+FDNOMARK = 0x0002
+FDIGNPROGRESS = 0x0004
+LOCK_SH = 1
+LOCK_EX = 2
+LOCK_NB = 4
+LOCK_UN = 8
+F_OK = 0
+X_OK = 1
+W_OK = 2
+R_OK = 4
+L_SET = 0
+L_INCR = 1
+L_XTND = 2