Update audio/musescore to latest upstream release, 3.4.1

3.4 was a features release, followed quick by a bugfix 3.4.1:
	https://musescore.org/en/handbook/developers-handbook/release-notes/release-notes-musescore-3x/release-notes-musescore-34x-2
	https://musescore.org/en/handbook/developers-handbook/release-notes/release-notes-musescore-3x/release-notes-musescore-34x-3

The patches change more than usual, since the bizzarre copy-webengine
CMake code moved to another directory.

Reported by:	portscout

audio/musescore/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	musescore
 DISTVERSIONPREFIX=	v
-DISTVERSION=	3.3.4
+DISTVERSION=	3.4.1
 CATEGORIES=	audio
 # DISTNAME=	MuseScore-${DISTVERSION}
 

audio/musescore/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1575585732
-SHA256 (musescore-MuseScore-v3.3.4_GH0.tar.gz) = ab8bade6c7eec6a9ae03f435cad65e79c4ca031d19020aa6e2a4da2868f49a2a
-SIZE (musescore-MuseScore-v3.3.4_GH0.tar.gz) = 62827836
+TIMESTAMP = 1580164708
+SHA256 (musescore-MuseScore-v3.4.1_GH0.tar.gz) = b0bfaf6a42faeae2d4c5b8404508a2e479612d3c33d7c73b0fa2616fb5d7c9b8
+SIZE (musescore-MuseScore-v3.4.1_GH0.tar.gz) = 62951880

audio/musescore/files/patch-CMakeLists.txt

@@ -3,9 +3,9 @@ loops in Ninja. I don't see much value in the PCH here, so
 just zero them out. (Neither do I understand how ninja ends
 up with the dependency loop; make handles this without complaint)
 
---- CMakeLists.txt.orig	2018-12-24 13:27:49 UTC
+--- CMakeLists.txt.orig	2020-01-25 12:18:16 UTC
 +++ CMakeLists.txt
-@@ -727,8 +727,8 @@ precompiled_header(QT_INCLUDES all ${BUILD_PCH})
+@@ -750,8 +750,8 @@ precompiled_header(QT_INCLUDES all ${BUILD_PCH})
  # MSVC does not require these targets, as all.h is not copied and the
  #   PCH generation is done per-project
  if (NOT MSVC)

audio/musescore/files/patch-main_CMakeLists.txt

@@ -1,22 +1,20 @@
-Editorialize. What are they thinking?
-
---- mscore/CMakeLists.txt.orig	2019-11-14 07:45:52 UTC
-+++ mscore/CMakeLists.txt
-@@ -739,7 +739,7 @@ else (MINGW)
+--- main/CMakeLists.txt.orig	2020-01-27 23:14:49 UTC
++++ main/CMakeLists.txt
+@@ -218,7 +218,7 @@ else (MINGW)
  
     if ( NOT MSVC )
- ## install qwebengine core
+       ## install qwebengine core
 -      if (NOT APPLE AND USE_WEBENGINE)
 +      if (YOU_CANT_SERIOUSLY_SUGGEST_TO_COPY_WEBENGINE_EXECUTABLES_AROUND)
           install(PROGRAMS
              ${QT_INSTALL_LIBEXECS}/QtWebEngineProcess
              DESTINATION bin
-@@ -752,7 +752,7 @@ else (MINGW)
+@@ -231,7 +231,7 @@ else (MINGW)
              ${QT_INSTALL_TRANSLATIONS}/qtwebengine_locales
              DESTINATION lib/qt5/translations
              )
 -      endif(NOT APPLE AND USE_WEBENGINE)
 +      endif(YOU_CANT_SERIOUSLY_SUGGEST_TO_COPY_WEBENGINE_EXECUTABLES_AROUND)
  
-       target_link_libraries(mscore
-          ${ALSA_LIB}
+       set_target_properties (
+          mscore