On Windows, don't try to lowercase/uppercase filenames.

Most of the time, Windows file name lookup is case-insensitive. Reading the
docs (see MSDN's CreateFile help, for example), it seems like case-sensitivity
can be controlled on a per-file basis where applicable (NTFS), but people
should be concerned about matching case in the DEFs/on disk *especially* in
that case.

Also, note that this hack will not always help on systems with case-sensitive
lookup.

git-svn-id: https://svn.eduke32.com/eduke32@2693 1a8010ca-5511-0410-912e-c29ae57300e0

polymer/eduke32/build/src/cache1d.c

@@ -359,6 +359,7 @@ int32_t findfrompath(const char *fn, char **where)
             *where = Bstrdup(fn);
             return 0;
         }
+#ifndef _WIN32
         else
         {
             char *tfn = Bstrtolower(Bstrdup(fn));
@@ -379,6 +380,7 @@ int32_t findfrompath(const char *fn, char **where)
 
             Bfree(tfn);
         }
+#endif
     }
 
     for (pfn = (char *)fn; toupperlookup[*pfn] == '/'; pfn++);
@@ -417,6 +419,7 @@ int32_t findfrompath(const char *fn, char **where)
             return 0;
         }
 
+#ifndef _WIN32
         //Check with all lowercase
         strcpy(pfn, sp->path);
         Bstrtolower(tfn);
@@ -440,9 +443,10 @@ int32_t findfrompath(const char *fn, char **where)
             Bfree(tfn);
             return 0;
         }
-
+#endif
         Bfree(tfn);
     }
+
     Bfree(pfn); Bfree(ffn);
     return -1;
 }