manual: remove some spurious ".tar.gz" suffixes from directory names

Author: wilfwilson

doc/z-chap1.xml

@@ -57,24 +57,24 @@
       </Item>
 
       <Item>
-        download the package archive <F>&ARCHIVENAME;.tar.gz</F> from
-        <URL Text="the Digraphs package webpage">https://digraphs.github.io/Digraphs/</URL>.
+        download the package archive <F>&ARCHIVENAME;</F> from
+        <URL Text="the Digraphs package webpage">https://digraphs.github.io/Digraphs</URL>.
       </Item>
 
       <Item>
         unzip and untar the file, this should create a directory called
-        <F>&ARCHIVENAME;</F>.
+        <F>&ARCHIVE_BASENAME;</F>.
       </Item>
 
       <Item>
         locate the <F>pkg</F> directory of your &GAP; directory, which contains
         the directories <F>lib</F>, <F>doc</F> and so on. Move the directory
-        <F>&ARCHIVENAME;</F> into the <F>pkg</F> directory.
+        <F>&ARCHIVE_BASENAME;</F> into the <F>pkg</F> directory.
       </Item>
 
       <Item>
         it is necessary to compile the &Digraphs; package.
-        Inside the <F>pkg/&ARCHIVENAME;</F> directory, type
+        Inside the <F>pkg/&ARCHIVE_BASENAME;</F> directory, type
         <Listing>
 <![CDATA[./configure
 make]]></Listing>
@@ -177,7 +177,7 @@ flags are provided.
 
     It is not possible to use the &Digraphs; package without compiling it.<P/>
 
-    To compile the kernel component inside the <F>pkg/&ARCHIVENAME;</F>
+    To compile the kernel component inside the <F>pkg/&ARCHIVE_BASENAME;</F>
     directory, type
 <Listing>
 <![CDATA[

makedoc.g

@@ -52,9 +52,12 @@ for Pkg in Concatenation(PkgInfo.Dependencies.NeededOtherPackages,
   XMLEntities.(entity_name) := RemovePrefixVersion(Pkg[2]);
 od;
 
-ARCHIVENAME := SplitString(PkgInfo.ArchiveURL, "/");
-ARCHIVENAME := Concatenation(ARCHIVENAME[Length(ARCHIVENAME)],
-                             PkgInfo.ArchiveFormats);
+# Can change the following line to use Last() once we drop GAP 4.10 support
+ARCHIVE_BASENAME := SplitString(PkgInfo.ArchiveURL, "/");
+ARCHIVE_BASENAME := ARCHIVE_BASENAME[Length(ARCHIVE_BASENAME)];
+XMLEntities.ARCHIVE_BASENAME := ARCHIVE_BASENAME;
+
+ARCHIVENAME := Concatenation(ARCHIVE_BASENAME, PkgInfo.ArchiveFormats);
 XMLEntities.ARCHIVENAME := ARCHIVENAME;
 
 XMLEntities.DIGRAPHS := PackageEntity("Digraphs");