largefiles: properly pass kwargs into url.open

The url.open function has acquired a lot of kwargs over the years.
When running `hg import http://example.com/hg/diff/1`, since at least
a708e1e4d7a8 in March, 2018, the calling sites for url.open try to
pass a `sendaccept` parameter that largefiles' override doesn't accept.

Currently that stack traces something like this:

  Traceback (most recent call last):
    File "/tmp/hgtests.sv744r5t/install/bin/hg", line 59, in <module>
      dispatch.run()
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 143, in run
      status = dispatch(req)
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 245, in dispatch
      status = _rundispatch(req)
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 289, in _rundispatch
      ret = _runcatch(req) or 0
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 465, in _runcatch
      return _callcatch(ui, _runcatchfunc)
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 475, in _callcatch
      return scmutil.callcatch(ui, func)
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/scmutil.py", line 155, in callcatch
      return func()
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 455, in _runcatchfunc
      return _dispatch(req)
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 1259, in _dispatch
      lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 913, in runcommand
      ret = _runcommand(ui, options, cmd, d)
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 1270, in _runcommand
      return cmdfunc()
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/dispatch.py", line 1256, in <lambda>
      d = lambda: util.checksignature(func)(ui, *args, **strcmdopt)
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/util.py", line 1867, in check
      return func(*args, **kwargs)
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/commands.py", line 4184, in import_
      patchfile = hg.openpath(ui, patchurl, sendaccept=False)
    File "/tmp/hgtests.sv744r5t/install/lib/python/mercurial/hg.py", line 181, in openpath
      return url.open(ui, path, sendaccept=sendaccept)
  TypeError: openlargefile() got an unexpected keyword argument 'sendaccept'

So, just accept and pass along any kwargs of the overridden function.

hgext/largefiles/overrides.py

@@ -1853,7 +1853,7 b' def upgraderequirements(orig, repo):'
 
 
 @eh.wrapfunction(urlmod, b'open')
-def openlargefile(orig, ui, url_, data=None):
+def openlargefile(orig, ui, url_, data=None, **kwargs):
     if url_.startswith(_lfscheme):
         if data:
             msg = b"cannot use data on a 'largefile://' url"
@@ -1861,4 +1861,4 b' def openlargefile(orig, ui, url_, data=N'
         lfid = url_[len(_lfscheme) :]
         return storefactory.getlfile(ui, lfid)
     else:
-        return orig(ui, url_, data=data)
+        return orig(ui, url_, data=data, **kwargs)

tests/test-hgweb-diffs.t

@@ -1138,6 +1138,21 b' test import rev as raw-rev'
   $ cd test1
   $ hg import -q --bypass --exact http://localhost:$HGPORT/rev/1
 
+repeat test above, with largefiles enabled
+
+  $ cd ..
+  $ rm -r test1
+  $ hg clone -r0 test test1
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 2 changes to 2 files
+  new changesets 0cd96de13884
+  updating to branch default
+  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ cd test1
+  $ hg import --config extensions.largefiles= -q --bypass --exact http://localhost:$HGPORT/rev/1
+
 raw revision with diff block numbers
 
   $ killdaemons.py