Use env to select tclsh path.

Use env to determine tclsh path rather than assume it's located
in /usr/local/bin.
Merge pull request #35 from SgtMalicious/env_topic

Use env to select tclsh path.
fixed q2 result when filter exists
Merge branch 'master' of https://github.com/int13h/squert
fixed issue #42 (maybe)
minor version bump