Fixes https://github.com/jackaudio/jack1/issues/84

jack_port_get_latency_range only returns meaningful values after ports get
connected, and that is signalled via the latency callback. Saying that it's
normally used in callbacks is too soft, the docs should make it clear that the
function is not very useful outside of the callback, because you don't know
whether the port is connected / whether the latency values changed.

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

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

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

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

Change-Id: I5489729c1540647421258c66c2e74f321d50b777

Somebody forgot to change the copy/pasted comment...

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

add missing `void` from jack_get_time prototype

This is semantically similar to jack_port_set_name() but because it is also passed a jack_client_t*, it can
contact the server to ensure that not only the rename is done but that port rename callbacks are delivered
appropriately

Fix internal client API, as jack_intclient_t is not a reference type.

With the current code, packed structs lead to unaligned memory access,
thus causing SIGBUS on ARM.

Let's disable packing on ARM for now. Since it's only used for mixed
32/64bit jackd installations and we're not facing such a scenario on
ARM, there's little use to worry more atm.

(Commit message copied from jackd2's 2f7d512b, since it's the same
problem)

All users of POST_PACKED_STRUCTURE also include <jack/types.h>, so to
avoid code duplication, we move the definition into a single place.

Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>

fix a typo

Clean up metadata.h and fix Doxygen markup.

This reverts commit 5fa50673fc.

Need to branch within submodule before making changes.