Define tabstops in font-dependent units

	With my default font the original version
	looks awful.

diff -ur libXt-1.0.5.orig/man/XtResolvePathname.man libXt-1.0.5/man/XtResolvePathname.man
--- libXt-1.0.5.orig/man/XtResolvePathname.man	2006-09-02 02:51:42.000000000 +0200
+++ libXt-1.0.5/man/XtResolvePathname.man	2008-10-07 12:11:23.000000000 +0200
@@ -215,7 +215,7 @@
 must contain the following substitutions:
 
 .nf
-.ta .3i 2i 2.5i
+.ta 3n 23n 27n
 1.	%C, %N, %S, %T, %L	or	%C, %N, %S, %T, %l, %t, %c
 2.	%C, %N, %S, %T, %l
 3.	%C, %N, %S, %T