New API call for path conversion

[Eric Blake]

According to Christopher Faylor on 2/22/2008 2:36 PM:
> Also, who is the expected consumer of this function?  A linux program
> doesn't need it.  And it doesn't really matter if it's not 100% clean if
> the only real consumers of the function are programs which are entirely
> under our control like mount or cygcheck.

Both the coreutils and bash packages happen to use cygwin path conversion 
at the moment, in my cygwin-specific patching (coreutils to make 'mv foo 
Foo' behave nicely by detecting whether two names represent different case 
spellings of the same underlying file, bash to convert Windows path names 
into POSIX names to reduce the number of complaints about behavior on text 
mounts).

-- 
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net