Add fill-column setting to emacs example configurations

This matches the maximum line length that pgindent uses.

src/tools/editors/emacs.samples

@@ -28,6 +28,7 @@
   (setq-default tab-width 4)
   (c-set-style "bsd")             ; set c-basic-offset to 4, plus other stuff
   (c-set-offset 'case-label '+)   ; tweak case indent to match PG custom
+  (setq fill-column 79)           ; matches what pgindent does
   (setq indent-tabs-mode t))      ; make sure we keep tabs when indenting
 
 
@@ -38,6 +39,7 @@
 
 (c-add-style "pgsql"
                       '("bsd"
+                                 (fill-column . 79)
                                  (indent-tabs-mode . t)
                                  (c-basic-offset   . 4)
                                  (tab-width . 4)
@@ -71,6 +73,7 @@
 		   (setq c-basic-offset 4)
 		   (setq tab-width 4)
 		   (c-set-offset 'case-label '+)
+		   (setq fill-column 79)
 		   (setq indent-tabs-mode t)
 		   )
 	       ))))