accept BIT* functions as _xlfnodf.* in Excel import

BITAND, BITOR, BITXOR, BITRSHIFT, BITLSHIFT are written as _xlfnodf.* in Excel
export because Excel doesn't have them. So far we weren't able to properly
read that in again and the #MACRO? error was generated as function result.

sc/source/filter/excel/xlformula.cxx

@@ -374,11 +374,11 @@ static const XclFunctionInfo saFuncTable_Odf[] =
     EXC_FUNCENTRY_ODF( ocArabic,        1,  1,  0,  "ARABIC" ),
     EXC_FUNCENTRY_ODF( ocB,             3,  4,  0,  "B" ),
     EXC_FUNCENTRY_ODF( ocBase,          2,  3,  0,  "BASE" ),
-    EXC_FUNCENTRY_ODF( ocNoName,        2,  2,  0,  "BITAND" ),
-    EXC_FUNCENTRY_ODF( ocNoName,        2,  2,  0,  "BITLSHIFT" ),
-    EXC_FUNCENTRY_ODF( ocNoName,        2,  2,  0,  "BITOR" ),
-    EXC_FUNCENTRY_ODF( ocNoName,        2,  2,  0,  "BITRSHIFT" ),
-    EXC_FUNCENTRY_ODF( ocNoName,        2,  2,  0,  "BITXOR" ),
+    EXC_FUNCENTRY_ODF( ocBitAnd,        2,  2,  0,  "BITAND" ),
+    EXC_FUNCENTRY_ODF( ocBitLshift,     2,  2,  0,  "BITLSHIFT" ),
+    EXC_FUNCENTRY_ODF( ocBitOr,         2,  2,  0,  "BITOR" ),
+    EXC_FUNCENTRY_ODF( ocBitRshift,     2,  2,  0,  "BITRSHIFT" ),
+    EXC_FUNCENTRY_ODF( ocBitXor,        2,  2,  0,  "BITXOR" ),
     EXC_FUNCENTRY_ODF( ocChiSqDist,     2,  3,  0,  "CHISQDIST" ),
     EXC_FUNCENTRY_ODF( ocChiSqInv,      2,  2,  0,  "CHISQINV" ),
     EXC_FUNCENTRY_ODF( ocKombin2,       2,  2,  0,  "COMBINA" ),