Minor cleanups to SymbolingsLogger.
* cvs2svn.py (CVSRevision.symbolic_names): Remove trivial accessor which
served only to obfuscate the code.
(SymbolingsLogger): Small doc fix.
(SymbolingsLogger.log_names_for_rev): Collapse into only callsite.
(SymbolingsLogger.log_revision): Absorb the code from the above.
Rewrite a conditional more intuitively.
Make the documentation reflect reality.
(SymbolingsLogger.close): Comment -> docstring.
git-svn-id: http://cvs2svn.tigris.org/svn/cvs2svn/trunk@1210 be7e6eca-30d4-0310-a8e5-ac0d63af7087