[CIFS] on reconnect to Samba - reset the unix capabilities

After temporary server or network failure and reconneciton, we were not
resending the unix capabilities via SetFSInfo - which confused Samba posix
byte range locking code.

Discovered by jra

Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/Kconfig

@@ -1871,20 +1871,14 @@ config CIFS
 	  file servers such as Windows 2000 (including Windows 2003, NT 4  
 	  and Windows XP) as well by Samba (which provides excellent CIFS
 	  server support for Linux and many other operating systems). Limited
-	  support for Windows ME and similar servers is provided as well. 
-	  You must use the smbfs client filesystem to access older SMB servers
-	  such as OS/2 and DOS.
+	  support for OS/2 and Windows ME and similar servers is provided as well.
 
 	  The intent of the cifs module is to provide an advanced
-	  network file system client for mounting to CIFS compliant servers, 
+	  network file system client for mounting to CIFS compliant servers,
 	  including support for dfs (hierarchical name space), secure per-user
 	  session establishment, safe distributed caching (oplock), optional
-	  packet signing, Unicode and other internationalization improvements, 
-	  and optional Winbind (nsswitch) integration. You do not need to enable
-	  cifs if running only a (Samba) server. It is possible to enable both
-	  smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
-	  and Samba 3 servers, and smbfs for accessing old servers). If you need 
-	  to mount to Samba or Windows from this machine, say Y.
+	  packet signing, Unicode and other internationalization improvements. 
+	  If you need to mount to Samba or Windows from this machine, say Y.
 
 config CIFS_STATS
         bool "CIFS statistics"
@@ -1977,14 +1971,13 @@ config CIFS_EXPERIMENTAL
 	  depends on CIFS && EXPERIMENTAL
 	  help
 	    Enables cifs features under testing. These features are
-	    experimental and currently include support for writepages
-	    (multipage writebehind performance improvements) and directory
-	    change notification ie fcntl(F_DNOTIFY) as well as some security
-	    improvements.  Some also depend on setting at runtime the
-	    pseudo-file /proc/fs/cifs/Experimental (which is disabled by
-	    default). See the file fs/cifs/README for more details.
-
-	    If unsure, say N.
+	    experimental and currently include DFS support and directory 
+	    change notification ie fcntl(F_DNOTIFY), as well as the upcall
+	    mechanism which will be used for Kerberos session negotiation
+	    and uid remapping.  Some of these features also may depend on 
+	    setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
+	    (which is disabled by default). See the file fs/cifs/README 
+	    for more details.  If unsure, say N.
 
 config CIFS_UPCALL
 	  bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"