Fixes ----- shared library: Link against zlib Always fsync file writes Treat '=' as an illegal character in variable names libuboot_env: fix calculation of usable envsize Correct initialisations in libuboot_configure Force writing of environment if default is used libuboot_env: correct length to usable env size length libuboot_env_store: fix env double-null termination uboot_env: fix infinite loop on short read (EOF)