Configure: Rename setting DEFSDATADIR to PKGCONFDIR

Directory /etc/WindowMaker is for global defaults configuration, it is not
a "data" folder which is $PREFIX/share/WindowMaker.

The name change make it more consistent with other names.

doc/Makefile.am

@@ -37,7 +37,7 @@ wmaker.1: wmaker.in Makefile $(top_builddir)/config.h
 		--header "$(top_builddir)/config.h" --filter "HAVE_INOTIFY" \
 		--filter "USE_ICCCM_WMREPLACE" \
 		-D"pkgdatadir=$(pkgdatadir)" --replace "pkgdatadir" \
-		-D"defsdatadir=$(defsdatadir)" --replace "defsdatadir" \
+		-D"pkgconfdir=$(pkgconfdir)" --replace "pkgconfdir" \
 		-o "wmaker.1"  "$(srcdir)/wmaker.in"
 
 wmsetbg.1: wmsetbg.in Makefile $(top_builddir)/config.h

doc/build/Compilation.texi

@@ -449,7 +449,7 @@ Specific to @sc{Window Maker}, this option defines an additional path where @emp
 searched. Nothing will be installed there; the default path taken is @file{@emph{DATADIR}/pixmaps},
 where @var{DATADIR} is the path defined from @option{--datadir}.
 
-@item --with-defsdatadir=@i{DIR}
+@item --with-pkgconfdir=@i{DIR}
 Specific to @sc{Window Maker}, defines the directory where system configuration
 files, e.g., @file{WindowMaker}, @file{WMRootMenu}, etc., are installed.  The
 default value is @file{@emph{SYSCONFDIR}/WindowMaker}, where @var{SYSCONFDIR} is

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 @defsdatadir@/
+.B @pkgconfdir@/
 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