[UPDATE] Improved php5.3 compatibility with debug info

Author: hi-hai

litespeed-cache/admin/tpl/settings_cdn.php

@@ -22,21 +22,21 @@
 	</tr>
 
 	<tr>
-		<th><?php echo __( 'Original URL', 'litespeed-cache' ) ; ?></th>
+		<th><?php echo __( 'CDN URL', 'litespeed-cache' ) ; ?></th>
 		<td>
-			<?php $this->build_input( LiteSpeed_Cache_Config::OPID_CDN_ORI, 'litespeed-input-long' ) ; ?>
+			<?php $this->build_input( LiteSpeed_Cache_Config::OPID_CDN_URL, 'litespeed-input-long' ) ; ?>
 			<div class="litespeed-desc">
-				<?php echo sprintf( __( 'Site URL to be served through the CDN. Beginning with %1$s. For example, %2$s', 'litespeed-cache' ), '<code>//</code>', '<code>' . $home_url . '</code>' ) ; ?>
+				<?php echo sprintf( __( 'CDN URL to be used. For example, %s', 'litespeed-cache' ), '<code>' . $cdn_url . '</code>' ) ; ?>
 			</div>
 		</td>
 	</tr>
 
 	<tr>
-		<th><?php echo __( 'CDN URL', 'litespeed-cache' ) ; ?></th>
+		<th><?php echo __( 'Original URL', 'litespeed-cache' ) ; ?></th>
 		<td>
-			<?php $this->build_input( LiteSpeed_Cache_Config::OPID_CDN_URL, 'litespeed-input-long' ) ; ?>
+			<?php $this->build_input( LiteSpeed_Cache_Config::OPID_CDN_ORI, 'litespeed-input-long' ) ; ?>
 			<div class="litespeed-desc">
-				<?php echo sprintf( __( 'CDN URL to be used. For example, %s', 'litespeed-cache' ), '<code>' . $cdn_url . '</code>' ) ; ?>
+				<?php echo sprintf( __( 'Site URL to be served through the CDN. Beginning with %1$s. For example, %2$s', 'litespeed-cache' ), '<code>//</code>', '<code>' . $home_url . '</code>' ) ; ?>
 			</div>
 		</td>
 	</tr>

litespeed-cache/includes/litespeed-cache-log.class.php

@@ -206,7 +206,7 @@ public static function push( $msg, $backtrace_limit = false )
 	{
 		// backtrace handler
 		if ( defined( 'LSCWP_LOG_MORE' ) && $backtrace_limit !== false ) {
-			$trace = debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS, $backtrace_limit + 2 ) ;
+			$trace = version_compare( PHP_VERSION, '5.4.0', '<' ) ? debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS ) : debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS, $backtrace_limit + 2 ) ;
 			for ( $i=1 ; $i <= $backtrace_limit + 1 ; $i++ ) {// the 0st item is push()
 				if ( empty( $trace[$i]['class'] ) ) {
 					break ;