FT-279 Fix a few missed initializers found by src/tests/keyrange.tdb
--get 0 test failure

Also, tidy up some indentation that got messed up during the refactor.
test case
try to prune empty basements after gc
check rightmost basement
verify after checkpoint
fix test
Merge branch 'prunetree' of github.com:Tokutek/ft-index into prunetree

Conflicts:
	src/tests/prune-empty-basements.cc