upip: Use uerrno module, drop errno dependency.

uerrno is a recently added builtin module.

upip/Makefile

@@ -2,7 +2,7 @@ all:
 
 # This target prepares snapshot of all dependency modules, for
 # self-contained install
-deps: upip_errno.py upip_gzip.py upip_utarfile.py
+deps: upip_gzip.py upip_utarfile.py
 
 upip_ffilib.py: ../ffilib/ffilib.py
 	cp $^ $@
@@ -10,8 +10,6 @@ upip_os.py: ../os/os/__init__.py
 	sed -r -e 's/((ffilib|errno|stat)([^_"]|$$))/upip_\1/' $^ >$@
 upip_os_path.py: ../os.path/os/path.py
 	sed -r -e 's/((ffilib|errno|os|stat)([^_"]|$$))/upip_\1/' $^ >$@
-upip_errno.py: ../errno/errno.py
-	cp $^ $@
 upip_gzip.py: ../gzip/gzip.py
 	cp $^ $@
 upip_stat.py: ../stat/stat.py

upip/upip.py

@@ -12,8 +12,8 @@ def upip_import(mod, sub=None):
 
 sys = upip_import("sys")
 import uos as os
+import uerrno as errno
 
-errno = upip_import("errno")
 gzip = upip_import("gzip")
 try:
     tarfile = upip_import("utarfile")

upip/upip_errno.py

@@ -1,38 +0,0 @@
-EPERM   = 1   # Operation not permitted
-ENOENT  = 2   # No such file or directory
-ESRCH   = 3   # No such process
-EINTR   = 4   # Interrupted system call
-EIO     = 5   # I/O error
-ENXIO   = 6   # No such device or address
-E2BIG   = 7   # Argument list too long
-ENOEXEC = 8   # Exec format error
-EBADF   = 9   # Bad file number
-ECHILD  = 10  # No child processes
-EAGAIN  = 11  # Try again
-ENOMEM  = 12  # Out of memory
-EACCES  = 13  # Permission denied
-EFAULT  = 14  # Bad address
-ENOTBLK = 15  # Block device required
-EBUSY   = 16  # Device or resource busy
-EEXIST  = 17  # File exists
-EXDEV   = 18  # Cross-device link
-ENODEV  = 19  # No such device
-ENOTDIR = 20  # Not a directory
-EISDIR  = 21  # Is a directory
-EINVAL  = 22  # Invalid argument
-ENFILE  = 23  # File table overflow
-EMFILE  = 24  # Too many open files
-ENOTTY  = 25  # Not a typewriter
-ETXTBSY = 26  # Text file busy
-EFBIG   = 27  # File too large
-ENOSPC  = 28  # No space left on device
-ESPIPE  = 29  # Illegal seek
-EROFS   = 30  # Read-only file system
-EMLINK  = 31  # Too many links
-EPIPE   = 32  # Broken pipe
-EDOM    = 33  # Math argument out of domain of func
-ERANGE  = 34  # Math result not representable
-EAFNOSUPPORT = 97 # Address family not supported by protocol
-ECONNRESET = 104 # Connection timed out
-ETIMEDOUT = 110 # Connection timed out
-EINPROGRESS = 115 # Operation now in progress