Signed-off-by: falkTX <falktx@falktx.com>

FUTEX_WAIT may be interrupted by a signal and return EINTR. If a client
process takes a signal while on the futex, the jack client may error out
with no way to recover despite the signal being safe. Instead, retry if
errno is set to EINTR.

SYS_futex is expected from system C library.
in glibc (/usr/include/bits/syscall.h defines it in terms of of NR_futex)
rv32 is using 64bit time_t from get go unlike other 32bit architectures
in glibc, therefore it wont have NR_futex defined but just NR_futex_time64
this aliases it to NR_futex so that SYS_futex is then defined for rv32

Signed-off-by: Khem Raj <raj.khem@gmail.com>

* Fix generation of client uuid

Signed-off-by: falkTX <falktx@falktx.com>

* Remove all client properties when removed; Cleanup a few things

Signed-off-by: falkTX <falktx@falktx.com>

* Make all uuid function arguments use jack_uuid_t type; Fix warnings

Signed-off-by: falkTX <falktx@falktx.com>

* Rework uuids to never be int, more cleanup

Signed-off-by: falkTX <falktx@falktx.com>

Fixes #338

Adjusts the permissions of linux futexes when promiscuous mode is enabled.

Includes optimizations for internal clients, but not enabled yet.