Rename `smalltalk' package to `gnu-smalltalk', part I.

See patch 90 as well.
--- orig/Makefile.am
+++ mod/Makefile.am
@@ -19,7 +19,7 @@
 AUTOMAKE_OPTIONS = gnu 1.8
 ACLOCAL_AMFLAGS = -I build-aux
 
-PACKAGE=smalltalk
+PACKAGE=gnu-smalltalk
 gstdatadir=$(pkgdatadir)
 
 DIST_SUBDIRS = lib-src snprintfv lightning sigsegv libffi opcode libgst \
--- orig/configure.ac
+++ mod/configure.ac
@@ -7,7 +7,7 @@
 dnl Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.60)
-AC_INIT([GNU Smalltalk], 3.1, help-smalltalk@gnu.org, smalltalk)
+AC_INIT([GNU Smalltalk], 3.1, help-smalltalk@gnu.org, gnu-smalltalk)
 MAINTAINER="bonzini@gnu.org"
 
 dnl CURRENT:REVISION:AGE means this is the REVISION-th version of