FIX #1641 htaccess compatibility issues with Apache < 2.4

core/trunk/.htaccess

-DirectoryIndex index.php
-
-Options -Indexes 
-Options FollowSymLinks Includes ExecCGI
-
-Require all denied
-
-# Root to allow index.php
-<FilesMatch "^$">
-  Require all granted
-</FilesMatch>
-
-# Core root
-<FilesMatch "^(index|ws_server|static|merged_js|merged_css|reopen)\.php$">
-  Require all granted
-</FilesMatch>
-
-# App static files
-<FilesMatch "\.(css|js|jpg|png|gif)$">
-  Require all granted
-</FilesMatch> 
-
-# App tools files
-<FilesMatch "\.(htm|html|jar)$">
-  Require all granted
-</FilesMatch>