- update build files: build linux x86_64 executable

Author: SoapyMan

.appveyor/Build.bat

@@ -10,7 +10,7 @@ set SDL2_DIR=%windows_sdl2_dir%
 
 premake5 vs2019
 
-cd project_vs2019_windows
+cd build
 
 set config=Debug:Release:Release_dev
 for %%c in (%config::= %) do (

.appveyor/Build.sh

@@ -4,10 +4,10 @@ set -ex
 # Configure
 cd "$APPVEYOR_BUILD_FOLDER/src_rebuild"
 ./premake5 gmake2
-cd project_gmake2_linux
+cd build
 
 # Build
-for config in debug_x86 release_x86 release_dev_x86
+for config in debug_x64 release_x64 release_dev_x64
 do
     make config=$config -j$(nproc)
 done

.appveyor/Install.sh

@@ -14,9 +14,9 @@ sudo apt-get install -qq aptitude -y
 
 # fix Ubuntu's broken mess of packages using aptitude
 sudo aptitude install --quiet=2 \
-    libsdl2-dev:i386 \
-    libopenal-dev:i386 \
-    libjpeg-turbo8-dev:i386 \
+    libsdl2-dev \
+    libopenal-dev \
+    libjpeg-turbo8-dev \
     flatpak flatpak-builder -y
 
 # Setting XDG_DATA_DIRS environement variable for flatpak