Rewrite of packager script so it can be run per configuration

PackageBuild.bat

@@ -0,0 +1,35 @@
+@echo off
+
+@if "%1"=="" goto no_arg
+
+set BUILD_PATH=build\win32\%1\
+
+if not exist COPYING goto no_preq
+if not exist README.md goto no_preq
+if not exist %BUILD_PATH%Cxbx.exe goto no_build
+if not exist %BUILD_PATH%glew32.dll goto no_build
+if not exist %BUILD_PATH%subhook.dll goto no_build
+
+set ZIP_APP="import\7za\7za.exe"
+set EXPORT_ZIP=export\%1.zip
+
+@call %ZIP_APP% a %EXPORT_ZIP% COPYING README.md
+cd %BUILD_PATH%
+@call ..\..\..\%ZIP_APP% u ..\..\..\%EXPORT_ZIP% Cxbx.exe glew32.dll subhook.dll
+cd /d %~dp0
+echo Finished packaging %EXPORT_ZIP%!
+goto eof
+
+:no_preq
+echo Missing files from repo
+goto eof
+
+:no_build
+echo Missing build at path %BUILD_PATH%
+goto eof
+
+:no_arg
+echo "Usage: %0 <build_configuration>"
+goto eof
+
+:eof

appveyor.yml

@@ -13,10 +13,9 @@ build:
   parallel: true
   verbosity: minimal
 after_build:
-  - ps: .\AppveyorPackager.ps1
+  - cmd: PackageBuild.bat "$env:configuration"
 artifacts:
-- path: export\Release.zip
-- path: export\Debug.zip
+- path: export
 install:
   # Git clone happens between init and install 
   - cmd: git submodule update --init --recursive