0.12dev: Merged [8740] from 0.11-stable, and improved the documentation for `trac-admin $ENV initenv --inherit=PATH` to mention how relative paths are resolved.
0.12dev: Merged [8740] from 0.11-stable, and improved the documentation for `trac-admin $ENV initenv --inherit=PATH` to mention how relative paths are resolved.

Closes #8724 again.

pkdevbox/trac,pkdevbox/trac,pkdevbox/trac,pkdevbox/trac