network/icecat: Fix ARCH detection and support.

Signed-off-by: Andrew Clemons <andrew.clemons@gmail.com>

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

network/icecat/icecat.SlackBuild

@@ -36,6 +36,7 @@ PKGTYPE=${PKGTYPE:-tgz}
 
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
+    i?86) ARCH=i686 ;;
     arm*) ARCH=arm ;;
        *) ARCH=$( uname -m ) ;;
   esac
@@ -53,18 +54,15 @@ TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM
 OUTPUT=${OUTPUT:-/tmp}
 
-if [ "$ARCH" = "i586" ]; then
-  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
-  LIBDIRSUFFIX=""
-elif [ "$ARCH" = "i686" ]; then
+if [ "$ARCH" = "i686" ]; then
   SLKCFLAGS="-O2 -march=i686 -mtune=i686"
   LIBDIRSUFFIX=""
 elif [ "$ARCH" = "x86_64" ]; then
   SLKCFLAGS="-O2 -fPIC"
   LIBDIRSUFFIX="64"
 else
-  SLKCFLAGS="-O2"
-  LIBDIRSUFFIX=""
+  echo "$ARCH not supported."
+  exit 1
 fi
 
 set -e