[ENH][CLEANUP] ChangeRecord file sharing ( problems, needs to be merged with 5655 )

[dway at mailcan.com]

Breaks source code lookup in my image.  Probably because of the conflict
with update #5655.

Checking 5817ChangeRecordCleanup-ar.cs (#5429) for method conflicts with
changesets after 5430RemoveDeprecatedIn36 ...
...checking ChangeRecord>>class:category:method:sourceFiles:
...checking ChangeRecord>>fileName
CONFLICT found for ChangeRecord class>>fileName with newer changeset
5655ChangeListEnh-nk
...checking ChangeRecord>>string
...checking ChangeRecord>>originalChangeSetForSelector:
...checking ChangeRecord>>text
...checking ChangeRecord>>readStamp
...checking ChangeRecord>>file:position:type:
1 conflict found.