Added missing gradle build files for remaining samples. Some related reordering, dependency fixing etc. CAS sample no longer requires two separate subprojects as both client and server app can be run from a single gradle build.

samples/preauth/preauth.gradle

@@ -0,0 +1,17 @@
+// Preauth sample build file
+
+apply plugin: 'war'
+apply plugin: 'jetty'
+
+dependencies {
+
+    runtime project(':spring-security-web'),
+            project(':spring-security-config'),
+            "org.slf4j:jcl-over-slf4j:$slf4jVersion",
+            "ch.qos.logback:logback-classic:$logbackVersion"
+}
+
+jettyRun {
+    contextPath = "/preauth"
+    userRealms = [new org.mortbay.jetty.security.HashUserRealm('Preauth Realm', "$projectDir/realm.properties")]
+}

samples/preauth/src/main/webapp/WEB-INF/classes/log4j.properties

@@ -1,20 +0,0 @@
-# Global logging configuration
-log4j.rootLogger=INFO, stdout, fileout
-
-log4j.logger.org.springframework.security=DEBUG, stdout, fileout
-
-# Console output...
-log4j.appender.stdout=org.apache.log4j.ConsoleAppender
-log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
-log4j.appender.stdout.layout.conversionPattern=[%p,%c{1},%t] %m%n
-
-# Rolling log file output...
-log4j.appender.fileout=org.apache.log4j.RollingFileAppender
-log4j.appender.fileout.File=spring-security-preauth.log
-#log4j.appender.fileout.File=${webapp.root}/WEB-INF/log4j.log
-log4j.appender.fileout.MaxFileSize=1024KB
-log4j.appender.fileout.MaxBackupIndex=1
-log4j.appender.fileout.layout=org.apache.log4j.PatternLayout
-log4j.appender.fileout.layout.conversionPattern=%d{ABSOLUTE} %5p %c{1},%t:%L - %m%n
-
-