[CMD]

[CMD]
Fix and simplify implementation of "IF EXIST":
- Don't make any difference between wildcard search and normal search
- This fixes handling DOS devices search (ie, IF EXIST C:\ReactOS\NUL now works)
- This fixes handling pagefile.sys without requiring specifing rights
- Also fix handling directory search, terminated with a \

CORE-11784

svn path=/trunk/; revision=74444