[Bug 2041] New: LFN DOS API is not turned on in all cases

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=2041

Summary: LFN DOS API is not turned on in all cases
           Product: Wine
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: wine-dos
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

The DOS API for long file names is not available on all possible
Dos/Windows configurations that would have it. In particular:

DOS LFN is available on Win2000 and WinXP (wine in nt4 mode)
 -- Note that this is not true of NT4 itself (what to do?)
DOS LFN is available on Win3.1 when dosver >= 7.0 & IFSHELP.SYS loaded

Simple overzealous fix: make DOS LFN available in *all* cases
(probably no program will break if it sees LFN when there shouldn't be)