Description:
------------
The error message given by rename() when one of its arguments doesn't exist does not distinguish which argument is at fault. This can make tracking down problems more difficult.

Reproduce code:
---------------
fclose(fopen("testfile", "w")); 
echo "bad 1st arg";
rename("nonexistantfile", "test");
echo "bad 2nd arg";
rename("testfile", "non/existant/dir"); 


Expected result:
----------------
bad 1st arg
Warning: rename(nonexistantfile,test): nonexistantfile: No such file or directory in Command line code on line 3
bad 2nd arg
Warning: rename(testfile,non/existant/dir): non/existant/dir: No such file or directory in Command line code on line 5


Actual result:
--------------
bad 1st arg
Warning: rename(nonexistantfile,test): No such file or directory in Command line code on line 3
bad 2nd arg
Warning: rename(testfile,non/existant/dir): No such file or directory in Command line code on line 5