Rebuilt for IMA sigs, glibc 2.34, aarch64 flags

Fix up use of SIGSTKSZ (Jeff Moyer)
Resolves: rhbz#1980845

Rebuilt for RHEL 9 BETA on Apr 15th 2021. Related: rhbz#1947937

Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild

Drop exclude for armv7hl as it's no longer necessary

Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild

Add io_uring_cq_eventfd_toggle() helper for new IORING_CQ_EVENTFD_DISABLED flag
Add IORING_OP_TEE
Documentation fixes and improvements

add io_uring_prep_splice()
add io_uring_prep_provide_buffers()
add io_uring_prep_remove_buffers()
add io_uring_register_eventfd_async()
reinstate io_uring_unregister_eventfd() (it was accidentally removed in 0.4)

Update license to GPL-2.0 OR MIT
Add io_uring_prep_epoll_ctl()
Add io_uring_get_probe(), io_uring_get_probe_ring()
Add io_uring_register_probe()
Add io_uring_{register,unregister}_personality()
Add io_uring_prep_{recv,send}()
Add io_uring_prep_openat2()
Add io_uring_ring_dontfork()
Add io_uring_prep_read() and io_uring_prep_write()
Documentation fixes and improvements

Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild

Add IORING_OP_STATX
Add IORING_OP_OPENAT/IORING_OP_CLOSE helpers
Add prep helpers for IORING_OP_FILES_UPDATE and IORING_OP_FALLOCATE
Add io_uring_prep_connect() helper
Add io_uring_wait_cqe_nr()
Add IORING_OP_ASYNC_CANCEL and prep helper

Add io_uring_cq_ready()
Add io_uring_peek_batch_cqe()
Add io_uring_prep_accept()
Add io_uring_prep_{recv,send}msg()
Add io_uring_prep_timeout_remove()
Add io_uring_queue_init_params()
Add io_uring_register_files_update()
Add io_uring_sq_space_left()
Add io_uring_wait_cqe_timeout()
Add io_uring_wait_cqes()
Add io_uring_wait_cqes_timeout()