system/memtest86: Align with template.

Signed-off-by: B. Watson <urchlay@slackware.uk>

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

system/memtest86/memtest86.SlackBuild

@@ -22,29 +22,40 @@
 #  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 #  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# 20230515 bkw: Modified by SlackBuilds.org, BUILD=4:
+# - create a proper top-level source directory (to avoid
+#   surprising anyone who expects to find one).
+# - hardcode ARCH=i586, since we no longer allow i486. this
+#   is strictly a cosmetic change (it only affects the name
+#   of the package file, not the contents).
+
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=memtest86
 VERSION=${VERSION:-4.3.7}
-BUILD=${BUILD:-3}
+BUILD=${BUILD:-4}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
 
-# i486 only.  Modify the Makefile at your own risk :-)
 ARCH=${ARCH:-$(uname -m)}
 case $ARCH in
-  i?86)   ARCH=i486 ;;
-  x86_64) ARCH=i486 ;;
+  i?86)   ;; # OK
+  x86_64) ;; # OK
   *)      echo "$ARCH is not supported." >&2; exit 1 ;;
 esac
 
+# 20230515 bkw: Hardcode this. Even if the package contains code that
+# would work on i486, this is the minimum *Slackware supported* CPU it
+# will run on.
+ARCH=i586
+
 if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
   echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
   exit 0
 fi
 
 TMP=${TMP:-/tmp/SBo}
-PKG=$TMP/package-$PRGNAM-$VERSION
+PKG=$TMP/package-$PRGNAM
 OUTPUT=${OUTPUT:-/tmp}
 
 DOCS="README*"
@@ -54,11 +65,13 @@ set -e
 rm -rf $PKG
 mkdir -p $TMP $PKG $OUTPUT
 cd $TMP
-rm -rf src
+rm -rf $PRGNAM-$VERSION
+mkdir -p $PRGNAM-$VERSION
+cd $PRGNAM-$VERSION
 tar xvf $CWD/$PRGNAM-$VERSION-src.tar.gz
-cd src
 chown -R root:root .
 chmod -R u+w,go-w,a+rX-st .
+cd src
 
 # Permissions and line endings need to be sanitized.
 # Required so that memtest86+ backported patches will apply cleanly.