Don't report an error if mkdir fails because a directory was created by another process.

mkinstalldirs

@@ -4,6 +4,8 @@
 # Created: 1993-05-16
 # Public domain
 
+# $Id$
+
 errstatus=0
 
 for file
@@ -12,7 +14,8 @@ do
    shift
 
    pathcomp=
-   for d in ${1+"$@"} ; do
+   for d
+   do
      pathcomp="$pathcomp$d"
      case "$pathcomp" in
        -* ) pathcomp=./$pathcomp ;;
@@ -20,7 +23,12 @@ do
 
      if test ! -d "$pathcomp"; then
         echo "mkdir $pathcomp" 1>&2
-        mkdir "$pathcomp" || errstatus=$?
+
+        mkdir "$pathcomp" || lasterr=$?
+
+        if test ! -d "$pathcomp"; then
+  	  errstatus=$lasterr
+        fi
      fi
 
      pathcomp="$pathcomp/"