Moved abspath option checking into file appender, log4js options now passed to appenders

lib/appenders/file.js

@@ -50,11 +50,16 @@ function fileAppender (file, layout, logSize, numBackups) {
     };
 }
 
-function configure(config) {
+function configure(config, options) {
     var layout;
     if (config.layout) {
 	layout = layouts.layout(config.layout.type, config.layout);
     }
+
+    if (options && options.cwd && !config.absolute) {
+        config.filename = path.join(options.cwd, config.filename);
+    }
+
     return fileAppender(config.filename, layout, config.maxLogSize, config.backups);
 }