Merged in mcuiza/processmaker/pm-2127 (pull request #1897)

PM-2127 - Admin>Settings>Logo  En windows Server 2012 y WIndows 7 no permite cargar un logo

gulliver/system/class.g.php

@@ -2634,6 +2634,20 @@ class G
             $oldumask = umask( 0 );
             if (! is_dir( $path )) {
                 G::verifyPath( $path, true );
+            }     
+            
+            if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
+                $file = str_replace("\\\\","\\",$file,$count);
+                if(!$count) {
+                    $winPath = explode("\\",$file);
+                    $file = "";
+                    foreach($winPath as $k => $v){
+                        if($v != "") {
+                            $file.= $v."\\";
+                        }
+                    }
+                    $file = substr($file,0,-1);
+                }   
             }
             
             G::LoadSystem('inputfilter');