add a patch for ltmain.sh reflecting modifications in CDI-PIO repo

autogen.sh

@@ -22,6 +22,7 @@ for patch in \
   contrib/00nagfor-libtool-patch/nagfor-libtool-2.4.6.patch \
   contrib/05macos-nagfor-patch/macos-nagfor.patch \
   contrib/06ltmain_nag_pthread-patch/ltmain_nag_pthread.patch \
+  contrib/08ltmain-parallel-printf-patch/ltmain-parallel-printf.patch \
   ; do
     echo "applying $patch"
     patch -p 1 --no-backup-if-mismatch --forward -r - -i $patch -d .

contrib/08ltmain-parallel-printf-patch/ltmain-parallel-printf.patch

+--- a/config/ltmain.sh
++++ b/config/ltmain.sh
+@@ -310,6 +310,18 @@ test -z "$GREP" && {
+ # in the command search PATH.
+ 
+ : ${CP="cp -f"}
++# work around bug in libtool which raises an error when running in a
++# parallel make that should have been handled in printf internally
++printf()
++{
++  while ! builtin printf "$@" ; do
++    errcode=$?
++    # errcode might be EAGAIN=11 which means to simply try again
++    if [ $errcode != 11 ]; then
++      return $errcode
++    fi
++  done
++}
+ : ${ECHO="printf %s\n"}
+ : ${EGREP="$GREP -E"}
+ : ${FGREP="$GREP -F"}