start of openjpa support

Signed-off-by: Tom Everett <tome@criticalmass.com>
more openjpa

Signed-off-by: Tom Everett <tome@criticalmass.com>
openjpa configures properly

Signed-off-by: Tom Everett <tome@criticalmass.com>
openjpa tests pass

Signed-off-by: Tom Everett <tome@criticalmass.com>
more docs updates

Signed-off-by: Tom Everett <tome@criticalmass.com>