We use -T consistently elsewhere to refer to the --template option.
The old -t option is now renamed to --oldtemplate so that -t still
works. This has the benign side effect of introducing and immediately
deprecating a new long option.
We also test with both -t and -T options.
Most UTF-8 aware terminals convert multibyte sequences into a single displayed
characters. Because the first column is padded by counting bytes, the second
column is not perfectly aligned in the presence of non ASCII characters.
Many tests didn't change back from subdirectories at the end of the tests ...
and they don't have to. The missing 'cd ..' could always be added when another
test case is added to the test file.
This change do that tests (99.5%) consistently end up in $TESTDIR where they
started, thus making it simpler to extend them or move them around.
