Create distributable packages on AppVeyor (#416)

Author: cmb69

.appveyor.yml

@@ -36,3 +36,6 @@ install:
 # build configuration
 build_script:
   - ps: .appveyor\build.ps1
+
+after_build:
+  - ps: .appveyor\package.ps1

.appveyor/install.ps1

@@ -67,4 +67,5 @@ $bname = "$env:DEP-$env:VC-$env:ARCH.zip"
 if (-not (Test-Path "C:\build-cache\$bname")) {
     Invoke-WebRequest "http://windows.php.net/downloads/pecl/deps/$bname" -OutFile "C:\build-cache\$bname"
     Expand-Archive "C:\build-cache\$bname" 'C:\build-cache\deps'
+    Copy-Item "C:\build-cache\deps\LICENSE" "C:\build-cache\deps\LICENSE.LIBRDKAFKA"
 }

.appveyor/package.ps1

@@ -0,0 +1,36 @@
+$ErrorActionPreference = "Stop"
+
+if ($env:TS -eq '0') {
+    $ts_part = 'nts'
+} else {
+    $ts_part = 'ts';
+}
+
+if ($env:APPVEYOR_REPO_TAG -eq "true") {
+    $bname = "php_rdkafka-$env:APPVEYOR_REPO_TAG_NAME-$env:PHP_VER-$ts_part-$env:VC-$env:ARCH"
+} else {
+    $bname = "php_rdkafka-$($env:APPVEYOR_REPO_COMMIT.substring(0, 8))-$env:PHP_VER-$ts_part-$env:VC-$env:ARCH"
+}
+$zip_bname = "$bname.zip"
+
+$dir = 'C:\projects\rdkafka\';
+if ($env:ARCH -eq 'x64') {
+    $dir += 'x64\'
+}
+$dir += 'Release'
+if ($env:TS -eq '1') {
+    $dir += '_TS'
+}
+
+$files = @(
+    "$dir\php_rdkafka.dll",
+    "$dir\php_rdkafka.pdb",
+    "C:\projects\rdkafka\CREDITS",
+    "C:\projects\rdkafka\LICENSE",
+    "C:\projects\rdkafka\README.md",
+    "C:\build-cache\deps\bin\librdkafka.dll",
+    "C:\build-cache\deps\bin\librdkafka.pdb",
+    "C:\build-cache\deps\LICENSE.LIBRDKAFKA"
+)
+Compress-Archive $files "C:\$zip_bname"
+Push-AppveyorArtifact "C:\$zip_bname"