Merge commit '44aafa33'

* commit '44aafa33':
  configure: Properly escape arguments in filter/filter_out helper functions
Merged-by: James Almer <jamrial@gmail.com>

configure

@@ -540,7 +540,7 @@ filter(){
     pat=$1
     shift
     for v; do
-        eval "case $v in $pat) printf '%s ' $v ;; esac"
+        eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
     done
 }
 
@@ -548,7 +548,7 @@ filter_out(){
     pat=$1
     shift
     for v; do
-        eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
+        eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
     done
 }