upip: Builtin module was renamed to "uos" (consistent with stmhal, etc.)

upip/metadata.txt

@@ -1,6 +1,6 @@
 srctype = micropython-lib
 type = module
-version = 0.6.2
+version = 0.6.3
 author = Paul Sokolovsky
 extra_modules = upip_errno, upip_gzip, upip_utarfile
 desc = Simple package manager for MicroPython.

upip/setup.py

@@ -6,7 +6,7 @@ from setuptools import setup
 
 
 setup(name='micropython-upip',
-      version='0.6.2',
+      version='0.6.3',
       description='Simple package manager for MicroPython.',
       long_description='Simple package manager for MicroPython, targetting to be self-hosted (but not yet there). Compatible only with packages without custom setup.py code.',
       url='https://github.com/micropython/micropython/issues/405',

upip/upip.py

@@ -11,7 +11,7 @@ def upip_import(mod, sub=None):
         return m
 
 sys = upip_import("sys")
-import _os as os
+import uos as os
 
 errno = upip_import("errno")
 gzip = upip_import("gzip")