[PATCH] Allow export to export svn:eol-style=native files with a user suplied eol marker.

This is a patch that should make it possible to generate the zip file
source packages for Windows on *nix platforms.

It permits you to do something like so:
svn export --native-eol CRLF http://svn.collab.net/repos/svn/tags/1.0.1
~/subversion-1.0.1-win

Only files with native set as the svn:eol-style property will be changed
to CRLF. Thus files that need to stay fixed to a certain line ending
can have CR, LF, CRLF or simply no svn:eol-style property.

I'm posting here first so that everyone can look at it first. It's not
terribly invasive.

[[[
Add new --native-eol option to export to allow files with svn:eol-style
of native to be exported with a non-standard EOL marker. Useful to make
Windows source packages from *nix platforms.

* subversion/include/svn_client.h
  (svn_client_export2): New function prototype. Move the documentation
    from svn_client_export() onto this function documenting the new option,
    native_eol, and the force option which wasn't documented before.
  (svn_client_export): deprecate.

* subversion/libsvn_client/export.c
  (get_eol_style): New helper function to handle getting the proper eol
    style for a file.
  (copy_versioned_files): Add a native_eol argument to the function.
    Use native_eol argument when calling self.
    Use get_eol_style() instead of svn_subst_eol_style_from_value().
  (edit_baton): Add native_eol member to the struct.
  (close_file): Use get_eol_style() instead of svn_subst_eol_style_from_value()
    with the native_eol form the edit_baton.
  (svn_client_export): Rename to svn_client_export2 and replace with a
    compatibility wrapper.
  (svn_client_export2): New function, differs from svn_client_export() by
    the native_eol parameter, setting the native_eol member of the edit_baton
    and passing native_eol to copy_versioned_files().

* subversion/clients/cmdline/cl.h
  (svn_cl__longopt_t): Add svn_cl__native_eol_opt to enum.
  (svn_cl__opt_state_t): Add native_eol member to struct.

* subversion/clients/cmdline/export-cmd.c
  (svn_cl__export): Use svn_client_export2() instead of svn_client_export().

* subversion/clients/cmdline/main.c
  (svn_cl__options): Add native-eol option to the array.
  (svn_cl__cmd_table): Add native-eol option to the export command.
  (main): Accept and validate native-eol option.

* subversion/clients/cmdline/export_tests.py
  Add regression test to verify that the new option works.
]]]

-- 
Ben Reser <ben@reser.org>
http://ben.reser.org
"Conscience is the inner voice which warns us somebody may be looking."
- H.L. Mencken

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