Constant libgit2_sys::GIT_OPT_ENABLE_OFS_DELTA

pub const GIT_OPT_ENABLE_OFS_DELTA: git_libgit2_opt_t = 0 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1; // 18u32