Small fix for Imakefile in doc/spoiler (0.90.2)

[Torbj|rn Lindgren <tl@etek.chalmers.se>]

There is a small error in the Imakefile in doc/spoiler that surfaces
under Ultrix 4.3. The problem is that one entry is prefaced with 8
spaces instead of a tab (which all other entries use).

*** Imakefile.orig      Mon Mar  7 07:57:31 1994
--- Imakefile   Tue Mar  8 16:41:10 1994
***************
*** 138,148 ****
  
  arche.tex: items arche-extract
        egrep -e "^915 " items | $(AWK) -F'&' -f arche-extract | sort > arche.tex
  
  weapmag.tex: items weap-extract
!         egrep -e "^15 " items | $(AWK) -F'&' -f weap-extract | sort > weapmag.tex
  
  mag.tex: items mag-extract
        $(AWK) -F'&' -f mag-extract items | sort +0.9 -0.10 > mag.tex
  
  install::
--- 138,148 ----
  
  arche.tex: items arche-extract
        egrep -e "^915 " items | $(AWK) -F'&' -f arche-extract | sort > arche.tex
  
  weapmag.tex: items weap-extract
!       egrep -e "^15 " items | $(AWK) -F'&' -f weap-extract | sort > weapmag.tex
  
  mag.tex: items mag-extract
        $(AWK) -F'&' -f mag-extract items | sort +0.9 -0.10 > mag.tex
  
  install::