InitFS: add environment variable info to usage output
InitFS: add environment variable info to usage output

Ignore-this: 25cb0166597d993ac5e52bc5d2c50435

darcs-hash:20090827151014-e018d-380a8ba91457b52522c7f1c8b195c6adf9fc2222.gz

nathankot/dbmigrations,anton-dessiatov/dbmigrations,jakubfijalkowski/dbmigrations,nick0x01/dbmigrations,creswick/dbmigrations