nvie/gitflow — pull request #188 by bloveridge (2012-01-06 18:11:23+00:00)
Title: fix usage of shFlags on FreeBSD

In order to make shFlags work appropriately on FreeBSD, one must set the `EXPR_COMPAT` environment variable to `1`.

This patch sets the environment variable appropriately if running inside bsd. This makes things like `git flow init -d` work appropriately in that environment.