Fix case of Genome::SoftwareResult->get(id => 'xxxx')
Revert "Avoid using SR->get with args other than ID"

This reverts commit 01258c6d5376e4e0645654942419cfda908951e4.
It should no longer be necessary with the SR fix.
Always define the boolean expression.
Merge pull request #308 from tmooney/sr_is_id_query

Fix SR's `_is_id_only_query`