Hallvard Furuseth 4a9ee2cb72 ITS#7620: Keep empty IDLs. Tweak mdb_page_alloc(). ... MDB_env.me_pghead: Don't free it when empty. mdb_ovpage_free() needs it, but cannot allocate it. mdb_midl_alloc(): Fill in length=0. mdb_page_alloc(): Also Skip freeDB if txnid<3, instead of <4, and consistently DPRINTF consumed IDLs.		2013-06-20 07:41:35 +02:00
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liblmdb	ITS#7620: Keep empty IDLs. Tweak mdb_page_alloc().	2013-06-20 07:41:35 +02:00