Bump AssemblyVersion to 2.7.5.0.

Add publisher policy files to redirect 2.7.0.40 to 2.7.5.0. Anything
that links against 2.7.0.40 will redirect to 2.7.5.0 (as they would
anyway if the existing 2.7.0.40 was just replaced) but anything that
links against 2.7.5.0 will not accidentally link against an old version
of 2.7.0.40.
Add publisher policy files to installer.
fixed cp34849

top level exception reporting uses existing exception traceback
adjusted test cases to account for extra new line - cp34871
disabled test for cp33123 - it can be only run manually
Merge remote-tracking branch 'jdhardy/cp35119-update-version' into ipy-2.7-maint
Update version in App.config files.