PostgreSQL pgbench 1.8.2

pts/pgbench-1.8.2 - 22 March 2018 - Create db directory on Windows otherwise the test seems to sometimes fail, also add note about MSVCR120.dll needing to be on system for PostgreSQL to work.

downloads.xml:

install.sh:

install_windows.sh:

results-definition.xml:

test-definition.xml: