Put documentation in share/doc/xzx instead of lib/xzx:

--- doc/Makefile.in.orig	Fri Oct  9 13:20:18 1998
+++ doc/Makefile.in	Fri Oct  9 13:34:32 1998
@@ -47,4 +47,5 @@
 sharedstatedir = @sharedstatedir@
 localstatedir = @localstatedir@
+docdir = $(datadir)/doc
 libdir = @libdir@
 infodir = @infodir@
@@ -54,4 +55,5 @@
 
 pkgdatadir = $(datadir)/@PACKAGE@
+pkgdocdir = $(docdir)/@PACKAGE@
 pkglibdir = $(libdir)/@PACKAGE@
 pkgincludedir = $(includedir)/@PACKAGE@
@@ -215,7 +217,7 @@
 
 install-data-local: Xzx
-	$(mkinstalldirs) $(pkglibdir)
+	$(mkinstalldirs) $(pkgdocdir)
 	for f in $(DOC_FILES); do \
-	  $(INSTALL_DATA) $$f $(pkglibdir); \
+	  $(INSTALL_DATA) $$f $(pkgdocdir); \
 	done
 	$(INSTALL_DATA) Xzx @XAPPLOADDIR@/Xzx