Prebuild - overwrite mix releases by default

Previously, when the Elixir/Erlang artifacts have been already built by a previous build
of Sonic Pi, and we run the Sonic Pi build process again, mix asked whether we
wanted to overwrite them or not. We now explicitly indicate that we want to
overwrite on the command line to avoid being asked during the build process.

Author: ethancrawford

app/linux-prebuild.sh

@@ -49,7 +49,7 @@ echo "Compiling Erlang files..."
 cd "${SCRIPT_DIR}/server/erlang/tau"
 mix local.hex --force
 mix deps.get
-mix release
+mix release --overwrite
 
 cp src/tau.app.src ebin/tau.app
 cd "${SCRIPT_DIR}"

app/mac-prebuild.sh

@@ -86,7 +86,7 @@ echo "Compiling Erlang/Elixir files..."
 cd "${SCRIPT_DIR}/server/erlang/tau"
 mix local.hex --force
 mix deps.get
-mix release
+mix release --overwrite
 
 cp src/tau.app.src ebin/tau.app
 cd "${SCRIPT_DIR}"

app/win-prebuild.bat

@@ -57,7 +57,7 @@ forfiles /p gui\qt\lang /s /m *.ts /c "cmd /c %QT_INSTALL_LOCATION%\bin\lrelease
 cd %~dp0\server\erlang\tau
 cmd /c mix local.hex --force
 cmd /c mix deps.get
-cmd /c mix release
+cmd /c mix release --overwrite
 
 cd %~dp0\server\erlang\tau
 copy /Y src\tau.app.src .\ebin\tau.app