fix getlib support for bz2 and support xz

This fixes the build as flite is now bundled as a tar.bz2 archive.

build/getlib.sh.in

@@ -1,46 +1,35 @@
 #!/bin/sh
 
-bz="false"
-
-BUNZIP=/usr/bin/bunzip2
 TAR=@TAR@
 ZCAT=@ZCAT@
+BZIP=@BZIP@
+XZ=@XZ@
 WGET=@WGET@
 CURL=@CURL@
 
 if [ -f "$WGET" ]; then
     DOWNLOAD_CMD=$WGET
-else
-    if [ -f "$CURL" ] ; then
+elif [ -f "$CURL" ]; then
     DOWNLOAD_CMD="$CURL -O"
 fi
-fi
 
+if [ -n "`echo $1 | grep '://'`" ]; then
+    base=$1/
+    tarfile=$2
+else
     base=http://files.freeswitch.org/downloads/libs/
     tarfile=$1
-url=`echo $tarfile | grep "://"`
-
-if [ `echo $tarfile | grep bz2`  ] ; then
-    bz="true"
-    UNZIPPER=$BUNZIP
-else
-    UNZIPPER=$ZCAT
 fi
 
-if [ ! -z $url ] ; then
-    base=$tarfile/
-    tarfile=$2
-fi
+uncompressed=`echo $tarfile | sed 's/\(\(\.tar\.gz\|\.tar\.bz2\|\.tar\.xz\)\|\(\.tgz\|\.tbz2\)\)$//'`
+
+case `echo $tarfile | sed 's/.*\.\([^.]\+\)$/\1/'` in
+    bz2|tbz2) UNZIPPER=$BZIP ;;
+    xz) UNZIPPER=$XZ ;;
+    gz|tgz|*) UNZIPPER=$ZCAT ;;
+esac
 
 if [ ! -d $tarfile ]; then
-
-    if [ $bz = "true" ] ; then
-	uncompressed=`echo $tarfile | sed "s/\.tar\.bz2//g"`
-    else 
-	uncompressed=`echo $tarfile | sed "s/\.tar\.gz//g"`
-	uncompressed=`echo $uncompressed | sed "s/\.tgz//g"`
-    fi
-
     if [ ! -f $tarfile ]; then
         rm -fr $uncompressed
         $DOWNLOAD_CMD $base$tarfile
@@ -50,9 +39,8 @@ if [ ! -d $tarfile ] ; then
         fi
     fi
     if [ ! -d $uncompressed ]; then
-	$UNZIPPER -c -d $tarfile | $TAR xf -
+        $UNZIPPER -c -d $tarfile | $TAR -xf -
     fi
 fi
 
 exit 0
-

configure.in

@@ -764,6 +764,8 @@ case $host in
        ;;
 esac
 
+AC_PATH_PROGS(BZIP, bzip2)
+AC_PATH_PROGS(XZ, xz)
 AC_PATH_PROGS(TAR, gtar tar)
 AC_PATH_PROGS(WGET, wget)
 AC_PATH_PROGS(CURL, curl)