Jenkinsfile: Use separate workspaces and clean them up.

Jenkinsfile

@@ -67,7 +67,7 @@ def getIW4xExecutable() {
 // We need a Windows Server with Visual Studio 2015, Premake5 and Git on it.
 def doBuild(name, wsid, premakeFlags, configuration) {
 	node("windows") {
-		ws("./$wsid") {
+		ws("IW4x/build/$wsid") {
 			checkout scm
 
 			useShippedPremake {
@@ -84,8 +84,9 @@ def doBuild(name, wsid, premakeFlags, configuration) {
 
 // This will run the unit tests for IW4x.
 // We need a Windows Server with MW2 on it.
-def doUnitTests(name) {
+def doUnitTests(name, wsid) {
 	node("windows") {
+		ws("IW4x/testing/$wsid") {
 			checkout scm
 
 			mw2dir = tool "Modern Warfare 2"
@@ -119,6 +120,8 @@ def doUnitTests(name) {
 				rmdir \"zone\\dlc\"
 				rmdir \"zone\\$localization\"
 				"""
+				deleteDir()
+			}
 		}
 	}
 }
@@ -159,7 +162,7 @@ stage("Testing") {
 	{
 		def configuration = configurations[i]
 		executions["$configuration"] = {
-			doUnitTests("IW4x $configuration (unit tests)")
+			doUnitTests("IW4x $configuration (unit tests)", configuration)
 		}
 	}
 	parallel executions
@@ -168,6 +171,8 @@ stage("Testing") {
 // Collect all the binaries and give each configuration its own subfolder
 stage("Publishing") {
 	node("windows") { // any node will do
+		ws("IW4x/pub") {
+			try {
 				for (int i = 0; i < configurations.size(); i++)
 				{
 					def configuration = configurations[i]
@@ -176,5 +181,9 @@ stage("Publishing") {
 					}
 				}
 				archiveArtifacts artifacts: "**/*.dll,**/*.pdb", fingerprint: true
+			} catch {
+				deleteDir()
+			}
+		}
 	}
 }