add sofia-sip 1.12.4 (plus some patches through 12/21/2006) to in tree libs

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3774 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/sofia-sip/libsofia-sip-ua/http/headers

@@ -0,0 +1,48 @@
+accept                  Accept                   
+accept_charset          Accept-Charset           
+accept_encoding         Accept-Encoding          
+accept_language         Accept-Language          
+accept_ranges           Accept-Ranges            
+age                     Age                      
+allow                   Allow                    
+authorization           Authorization            
+cache_control           Cache-Control            
+connection              Connection               
+content_encoding        Content-Encoding         
+content_language        Content-Language         
+content_length          Content-Length           
+content_location        Content-Location         
+content_md5             Content-MD5              
+content_range           Content-Range            
+content_type            Content-Type             
+date                    Date                     
+etag                    ETag                     
+expect                  Expect                   
+expires                 Expires                  
+from                    From                     
+host                    Host                     
+if_match                If-Match                 
+if_modified_since       If-Modified-Since        
+if_none_match           If-None-Match            
+if_range                If-Range                 
+if_unmodified_since     If-Unmodified-Since      
+last_modified           Last-Modified            
+location                Location                 
+max_forwards            Max-Forwards             
+mime_version            MIME-Version
+pragma                  Pragma                   
+pr_authenticate         Proxy-Authenticate       
+pr_authorization        Proxy-Authorization      
+range                   Range                    
+referer                 Referer                  
+retry_after             Retry-After              
+server                  Server                   
+te                      TE                       
+trailer                 Trailer                  
+transfer_encoding       Transfer-Encoding        
+upgrade                 Upgrade                  
+user_agent              User-Agent               
+vary                    Vary                     
+via                     Via                      
+warning                 Warning                  
+www_authenticate        WWW-Authenticate