Accepting request 1128843 from home:kill_it:branches:multimedia:libs

- fix rtmidi.pc:
  rework rtmidi-4.0.0-pkgconfig.patch to rtmidi-6.0.0-pkgconfig.patch
  update rtmidi-cmake.patch
- add ALSA-Avoid-listing-ports-that-are-usually-from-3rd-party.patch
  from upstream

OBS-URL: https://build.opensuse.org/request/show/1128843
OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/rtmidi?expand=0&rev=8

rtmidi-6.0.0-pkgconfig.patch

@@ -0,0 +1,21 @@
+diff --git a/rtmidi.pc.in b/rtmidi.pc.in
+index acb6888..0639c83 100644
+--- a/rtmidi.pc.in
++++ b/rtmidi.pc.in
+@@ -1,12 +1,12 @@
+ prefix=@prefix@
+ exec_prefix=${prefix}
+-libdir=${exec_prefix}/lib
+-includedir=${prefix}/include/rtmidi
++libdir=${exec_prefix}/@libdir@
++includedir=${prefix}/@includedir@
+ 
+-Name: librtmidi
++Name: rtmidi
+ Description: RtMidi - a set of C++ classes that provide a common API for realtime MIDI input/output
+ Version: @PACKAGE_VERSION@
+ Requires.private: @req@
+ Libs: -L${libdir} -lrtmidi
+ Libs.private: -lpthread @req_libs@
+-Cflags: -pthread -I${includedir} @api@
++Cflags: -pthread -I${includedir}/rtmidi @api@