We're not using the old hide_stderr.py script anymore
Committing current version of BLAST test files (no history).

Up until now, the BLAST+ Galaxy tools were developed on a branch of
an hg repository holding the whole of Galaxy, with the test-data/
folder holding the unit test data files, and tools/ncbi_blast_plus/
holding the wrappers themselves.

During the migration and extraction to git, only the tool history
was preserved. Historic revisions to the test data (e.g. updates
when changing BLAST version) have been lost.
Move contents of ToolShed entry 'blast_datatypes' into its own folder
Move blastxml_to_top_descr into its own folder
Move reciprocal_best_hits into its own folder
Move core BLAST+ wrappers into their own folder
Now blastxml_to_top_descr is in a separate folder, it needs a copy of repository_dependencies.xml
Add note about other BLAST related tools also in this repository
Adopt README.rst rather than $NAME.rst