guarded new DBT_ARRAY api functions with #ifdef USE_TDB #31

BDB versions of tests fail to compile because DBT_ARRAY is undeclared.
refs #48, remove unnecessary paranoid_invariant
#31 remove more tokudb only tests
guarded new DBT_ARRAY api functions with #ifdef USE_TDB #31

BDB versions of tests fail to compile because DBT_ARRAY is undeclared.
#31 remove more tokudb only tests
Merge branch 'bdb-compile-fix' of github.com:Tokutek/ft-index into bdb-compile-fix
#50 count long tail fsync times
#50 measure checkpoint begin time and look for long times
Merge branch 'blackswan50' of github.com:Tokutek/ft-index into blackswan50