Fixing the other RegExes as well since they were also not using the u modifier

Add the u modifier to the regexes used.

src/phpDocumentor/Reflection/DocBlock.php

@@ -99,7 +99,7 @@ class DocBlock implements \Reflector
     {
         $comment = trim(
             preg_replace(
-                '#[ \t]*(?:\/\*\*|\*\/|\*)?[ \t]{0,1}(.*)?#', '$1', $comment
+                '#[ \t]*(?:\/\*\*|\*\/|\*)?[ \t]{0,1}(.*)?#u', '$1', $comment
             )
         );
 
@@ -133,7 +133,7 @@ class DocBlock implements \Reflector
         } else {
             // clears all extra horizontal whitespace from the line endings
             // to prevent parsing issues
-            $comment = preg_replace('~(?m)\h*$~', '', $comment);
+            $comment = preg_replace('~(?m)\h*$~u', '', $comment);
 
             /*
              * Splits the docblock into a short description, long description and
@@ -173,7 +173,7 @@ class DocBlock implements \Reflector
           )
         )?
         (\s+ [\s\S]*)? # everything that follows
-        /', $comment, $matches
+        /u', $comment, $matches
             );
             array_shift($matches);
         }

src/phpDocumentor/Reflection/DocBlock/LongDescription.php

@@ -35,7 +35,7 @@ class LongDescription implements \Reflector
      */
     public function __construct($content)
     {
-        if (preg_match('/\{\@(.+?)\}/', $content, $matches)) {
+        if (preg_match('/\{\@(.+?)\}/u', $content, $matches)) {
             array_shift($matches);
             foreach ($matches as $tag) {
                 $this->tags[] = Tag::createInstance('@' . $tag);