Use the JSON builder to prepare arguments for modules and metadata
instead of custom memopen and fprintf. This makes it easier to ensure
the strings are all properly escaped.
This removes the use of spa_json_encode_string(), which could return a
truncated, non-zero terminated result, which we needed to check
everywhere.
config.h needs to be consistently included before any standard headers
if we ever want to set feature test macros (like _GNU_SOURCE or whatever)
inside. It can lead to hard-to-debug issues without that.
It can also be problematic just for our own HAVE_* that it may define
if it's not consistently made available before our own headers. Just
always include it first, before everything.
We already did this in many files, just not consistently.
Add support for some modules to use a module.$NAME.args config section
to override the arguments of the module. Update the docs.
Add more conditions to the module loading, use !false to also load the
module when the condition is not set and so that we don't have to
explicitly set each condition to true.
Improve module-profiler example config.
There is no need to start jackdbus via dbus service activation,
because this module is only interested in reacting to the jack server
starting/shutting down, it does not actually want to make use of jack
itself.
