1.0.2dev: print `trac-admin` errors in functional tests.
1.0.2dev: print `trac-admin` errors in functional tests.

Print the error when an exception is thrown due to a non-zero return
code from calling `trac-admin`.

Patch by Ryan J Ollos <ryan.j.ollos@gmail.com>.



git-svn-id: 50cd48c816abc7a9f40e8e03a4277466cb30a3e4@11772 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac