Update OpenAL-Soft

Update to version 1.19.1

.travis/build.sh

@@ -40,7 +40,7 @@ FFMPEG_PATH="$BUILD/ffmpeg"
 FFMPEG_CACHE_VERSION="3"
 
 OPENAL_PATH="$BUILD/openal-soft"
-OPENAL_CACHE_VERSION="3"
+OPENAL_CACHE_VERSION="4"
 
 GYP_DEFINES=""
 
@@ -476,6 +476,8 @@ buildOpenAL() {
 
   cd "$EXTERNAL"
   git clone https://github.com/kcat/openal-soft.git
+  cd openal-soft
+  git checkout openal-soft-1.19.1
 
   cd "$EXTERNAL/openal-soft/build"
   cmake \

docs/building-cmake.md

@@ -89,7 +89,7 @@ Go to ***BuildPath*** and run
 
     git clone git://repo.or.cz/openal-soft.git
     cd openal-soft
-    git checkout v1.18
+    git checkout openal-soft-1.19.1
     cd build
     cmake -D LIBTYPE:STRING=STATIC ..
     make $MAKE_THREADS_CNT

docs/building-msvc.md

@@ -89,7 +89,7 @@ Open **x86 Native Tools Command Prompt for VS 2017.bat**, go to ***BuildPath***
 
     git clone git://repo.or.cz/openal-soft.git
     cd openal-soft
-    git checkout 18bb46163af
+    git checkout openal-soft-1.19.1
     cd build
     cmake -G "Visual Studio 15 2017" -D LIBTYPE:STRING=STATIC -D FORCE_STATIC_VCRT:STRING=ON ..
     msbuild OpenAL32.vcxproj /property:Configuration=Debug

docs/building-xcode.md

@@ -87,7 +87,9 @@ Go to ***BuildPath*** and run
     cd ..
 
     git clone git://repo.or.cz/openal-soft.git
-    cd openal-soft/build
+    cd openal-soft
+    git checkout openal-soft-1.19.1
+    cd build
     cmake -D LIBTYPE:STRING=STATIC -D CMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.8 ..
     make -j4
     sudo make install

snap/snapcraft.yaml

@@ -284,7 +284,7 @@ parts:
   openal:
     source: https://github.com/kcat/openal-soft.git
     source-depth: 1
-    source-branch: v1.18
+    source-branch: v1.19
     plugin: cmake
     build-packages:
       - oss4-dev