rar: merge access and stream_filter in a single module
jack: simplify build rules
configure: remove no-op
mash: remove plugin

Upstream is gone. Maintainer has left. Build system support is missing.
globalhotkeys: use different names for Win32 and XCB targets

This works around an automake limitation with multiple directory
prefixes.
msg_...: accept filename as module
msg_...: default value for MODULE_STRING

This was often confusing external plugin authors.
demux: ogg: handle broken chapter extension