Clean up header guards that don't match their file name

Header guard symbols should match their file name to make guard
collisions less likely.  Offenders found with
scripts/clean-header-guards.pl -vn.

Cleaned up with scripts/clean-header-guards.pl, followed by some
renaming of new guard symbols picked by the script to better ones.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>

ui/vnc-enc-tight.h

@@ -27,8 +27,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef VNC_ENCODING_TIGHT_H
-#define VNC_ENCODING_TIGHT_H
+#ifndef VNC_ENC_TIGHT_H
+#define VNC_ENC_TIGHT_H
 
 /*- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  * Tight Encoding.
@@ -180,4 +180,4 @@
 #define VNC_TIGHT_DETECT_MIN_WIDTH           8
 #define VNC_TIGHT_DETECT_MIN_HEIGHT          8
 
-#endif /* VNC_ENCODING_TIGHT_H */
+#endif /* VNC_ENC_TIGHT_H */

ui/vnc-enc-zrle.h

@@ -26,8 +26,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef VNC_ENCODING_ZRLE_H
-#define VNC_ENCODING_ZRLE_H
+#ifndef VNC_ENC_ZRLE_H
+#define VNC_ENC_ZRLE_H
 
 /*- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  * ZRLE - encoding combining Zlib compression, tiling, palettisation and

ui/vnc-enc-zywrle.h

@@ -41,8 +41,8 @@ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  ********************************************************************/
 
-#ifndef VNC_ENCODING_ZYWRLE_H
-#define VNC_ENCODING_ZYWRLE_H
+#ifndef VNC_ENC_ZYWRLE_H
+#define VNC_ENC_ZYWRLE_H
 
 /* Tables for Coefficients filtering. */
 #ifndef ZYWRLE_QUANTIZE