convert: svn_sink: workaround of command line size limitation on win32.
On win32, the command line arguments seems to be limited about 2400
bytes. So 'add', 'delete', 'propget' and 'propdel' operations are
called several times within this limitation. And also 'commit'
operation is changed to be called without passing target files not to
exceeds this limitation because it cannot be a separated like other
operations above.
adding a
% check custom patch options are honored
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
applying ../a.diff
Using custom patch
nothing changed