updated for version 7.3.872

Problem:    On some systems case of file names is always ignored, on others
            never.
Solution:   Add the 'fileignorecase' option to control this at runtime.
            Implies 'wildignorecase'.

src/option.c

@@ -1108,6 +1108,15 @@ static struct vimoption
 			    (char_u *)&p_ffs, PV_NONE,
 			    {(char_u *)DFLT_FFS_VI, (char_u *)DFLT_FFS_VIM}
 			    SCRIPTID_INIT},
+    {"fileignorecase", "fic", P_BOOL|P_VI_DEF,
+			    (char_u *)&p_fic, PV_NONE,
+			    {
+#ifdef CASE_INSENSITIVE_FILENAME
+				    (char_u *)TRUE,
+#else
+				    (char_u *)FALSE,
+#endif
+					(char_u *)0L} SCRIPTID_INIT},
     {"filetype",    "ft",   P_STRING|P_ALLOCED|P_VI_DEF|P_NOGLOB|P_NFNAME,
 #ifdef FEAT_AUTOCMD
 			    (char_u *)&p_ft, PV_FT,