doc: Use new defsdatadir variable to specify defaults directory in manpage.

doc/Makefile.am

@@ -35,8 +35,8 @@ wmaker.1: wmaker.in Makefile $(top_builddir)/config.h
 	$(AM_V_GEN)$(top_srcdir)/script/replace-ac-keywords.sh \
 		--header "$(top_builddir)/config.h" --filter "HAVE_INOTIFY" \
 		--filter "USE_ICCCM_WMREPLACE" \
-		-D"sysconfdir=$(sysconfdir)" --replace "sysconfdir" \
 		-D"pkgdatadir=$(pkgdatadir)" --replace "pkgdatadir" \
+		-D"defsdatadir=$(defsdatadir)" --replace "defsdatadir" \
 		-o "wmaker.1"  "$(srcdir)/wmaker.in"
 
 wmsetbg.1: wmsetbg.in Makefile $(top_builddir)/config.h

doc/wmaker.in

@@ -85,7 +85,7 @@ Attribute Editor (right drag the application's title bar, select
 Attributes) instead of modifying this file directly. There are just a
 few options not available using the Attributes Editor.
 .TP
-.B @sysconfdir@/WindowMaker/Defaults/
+.B @defsdatadir@/
 All the above-mentioned files are READ from here if not found except
 for WMState, which is COPIED from here. No matter where they are read
 from, if it's necessary to write configuration changes back into this