uring library

BRANCH_TODO

@@ -0,0 +1,6 @@
+Possible kernel bugs:
+  - if entries is small (e.g. 1) which means that .ring_entries (a *u32) can be unaligned
+  - processes don't exit and can't be killed
+    Seems to be unregisterFiles related
+  - io_uring_setup returns ENOMEM
+  - fence in getCompletion doesn't always work (especially after a write)

std/std.zig

@@ -55,6 +55,7 @@ pub const sort = @import("sort.zig");
 pub const ascii = @import("ascii.zig");
 pub const testing = @import("testing.zig");
 pub const time = @import("time.zig");
+pub const uring = @import("uring.zig");
 pub const unicode = @import("unicode.zig");
 pub const valgrind = @import("valgrind.zig");
 pub const zig = @import("zig.zig");