mdb not supports windows
Merge branch 'develop' of https://github.com/siddontang/ledisdb into develop

Conflicts:
	Makefile
store add transaction support
remove foolish code
update tx test
remove BatchWrite Close

leveled and rocksdb use runtime SetFinalizer instead
store reduce pointer alloc
rename; add readOnly field
update cmmands.json
lmdv update
store update
Merge branch 'transaction-feature' into develop
dev snappy bugfix
Merge branch 'develop'