Potential patch for mkdirhier

[Y.W. Law]

hi all,

i have recently discoverd that the script "mkdirhier" does not work 
properly on Cygwin (i doubt that i'm the first one who discovered this, 
but i can't find any patch on the web). the cause is that in the script, 
it is possible for /bin/sh to shift $@ such that you will get empty 
string for $filename. when that happens, mkdirhier will possibly try to 
mkdir such path "//some/path" --> this doesn't present any problem for 
Linux, but it is an error on Cygwin. Therefore, i propose the following 
patch to look out for empty string when parsing the path:

--- mkdirhier.bak       2002-01-21 14:41:32.000000000 +0100
+++ mkdirhier   2003-06-22 15:51:23.000000000 +0200
@@ -43,6 +43,11 @@
       for filename
       do
+        #[ywlaw]
+        if [ "$filename" = '' ]; then
+            continue
+        fi
+
               path=$prefix$filename
               prefix=$path/
               shift
i hope this is a useful observation.

Best regards,
yw