Ensure yaf installer can find configuration files

toolset/setup/linux/languages/yaf.sh

@@ -3,12 +3,12 @@
 RETCODE=$(fw_exists /usr/local/lib/php/extensions/no-debug-non-zts-20100525/yaf.so)
 [ ! "$RETCODE" == 0 ] || { \
   echo "Enabling yaf in PHP configuration...";
-  sudo cp ../config/php.ini /usr/local/lib/php.ini
-  sudo cp ../config/php-fpm.conf /usr/local/lib/php-fpm.conf
+  sudo cp $FWROOT/config/php.ini /usr/local/lib/php.ini
+  sudo cp $FWROOT/config/php-fpm.conf /usr/local/lib/php-fpm.conf
   return 0; }
 
 fw_depends php
 sudo pecl install -f yaf
-sudo cp ../config/php.ini /usr/local/lib/php.ini
-sudo cp ../config/php-fpm.conf /usr/local/lib/php-fpm.conf
+sudo cp $FWROOT/config/php.ini /usr/local/lib/php.ini
+sudo cp $FWROOT/config/php-fpm.conf /usr/local/lib/php-fpm.conf