0.4.2

• LMDB 0.9.15 Release (2015/06/19)
  • Fix txn init (ITS#7961,#7987)
  • Fix MDB_PREV_DUP (ITS#7955,#7671)
  • Fix compact of empty env (ITS#7956)
  • Fix mdb_copy file mode
  • Fix mdb_env_close() after failed mdb_env_open()
  • Fix mdb_rebalance collapsing root (ITS#8062)
  • Fix mdb_load with large values (ITS#8066)
  • Fix to retry writes on EINTR (ITS#8106)
  • Fix mdb_cursor_del on empty DB (ITS#8109)
  • Fix MDB_INTEGERDUP key compare (ITS#8117)
  • Fix error handling (ITS#7959,#8157,etc.)
  • Fix race conditions (ITS#7969,7970)
  • Added workaround for fdatasync bug in ext3fs
    • Build
      • Don't use -fPIC for static lib
      • Update .gitignore (ITS#7952,#7953)
      • Cleanup for "make test" (ITS#7841), "make clean", mtest*.c
      • Misc. Android/Windows cleanup
    • Documentation
      • Fix MDB_APPEND doc
      • Fix MDB_MAXKEYSIZE doc (ITS#8156)
      • Fix mdb_cursor_put,mdb_cursor_del EACCES description
      • Fix mdb_env_sync(MDB_RDONLY env) doc (ITS#8021)
      • Clarify MDB_WRITEMAP doc (ITS#8021)
      • Clarify mdb_env_open doc
      • Clarify mdb_dbi_open doc