lynx-dev dev.20 patch for help_files.sed when no use_gzip_help

[pg]

When the builder does not select use_gzip_help, new code in
makefile.in, apparently intended to generate a line in
help_files.sed such as:

    s$\.gz\.gz%%

instead generates:

    s%\%%g

which causes "gmake install-help" to generate multiple messages
and perhaps fail:

    sed: command garbled: s%\%%g

The following patch suppresses the superfluous sed command.

-- gil
=================================================================
%%% Created Sat Mar 20 17:56:32 MST 1999 by target lynx.patch. %%%
diff -bru orig/lynx2-8-2/makefile.in lynx2-8-2/makefile.in
--- orig/lynx2-8-2/makefile.in  Wed Mar 17 20:17:11 1999
@@ -337,8 +339,9 @@
                -e 's%\.html=%\\.html=%' \
                $(srcdir)/lynx_help/help_files.txt | $(FIX_SED) >> \
                $(helpdir)/help_files.sed
+       case "$(COMPRESS_EXT)" in "") ;; *) \
        echo 's%\$(COMPRESS_EXT)\$(COMPRESS_EXT)%$(COMPRESS_EXT)%g' >> \
-               $(helpdir)/help_files.sed
+               $(helpdir)/help_files.sed;; esac
        @echo Translating/copying html files
        @address@hidden(SHELL) -c 'cd $(srcdir)/lynx_help && ( \
                dirs=keystrokes; \