Added support for symbol codepage.
Improved handling of undefined codepage characters.

diff --git a/unicode/c_932.c b/unicode/c_932.c
index c44014b..58a358b 100644
--- a/unicode/c_932.c
+++ b/unicode/c_932.c
@@ -26,7 +26,7 @@
     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
-    0x00a0, 0xff61, 0xff62, 0xff63, 0xff64, 0xff65, 0xff66, 0xff67,
+    0x003f, 0xff61, 0xff62, 0xff63, 0xff64, 0xff65, 0xff66, 0xff67,
     0xff68, 0xff69, 0xff6a, 0xff6b, 0xff6c, 0xff6d, 0xff6e, 0xff6f,
     0xff70, 0xff71, 0xff72, 0xff73, 0xff74, 0xff75, 0xff76, 0xff77,
     0xff78, 0xff79, 0xff7a, 0xff7b, 0xff7c, 0xff7d, 0xff7e, 0xff7f,
@@ -37,7 +37,7 @@
     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
-    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x00fd, 0x00fe, 0x00ff,
+    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x003f, 0x00fe, 0x003f,
     /* unused lead bytes */
     0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f,
     0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f,
@@ -1617,7 +1617,7 @@
     0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f,
     0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f,
     0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f, 0x003f,
-    0x00a0, 0x0021, 0x0063, 0x004c, 0x003f, 0x0059, 0x003f, 0x8198,
+    0x0020, 0x0021, 0x0063, 0x004c, 0x003f, 0x0059, 0x003f, 0x8198,
     0x814e, 0x0063, 0x0061, 0x8173, 0x003f, 0x002d, 0x0072, 0x815c,
     0x818b, 0x817d, 0x0032, 0x0033, 0x814c, 0x83ca, 0x81f7, 0x003f,
     0x002c, 0x0031, 0x006f, 0x8174, 0x003f, 0x003f, 0x003f, 0x003f,
@@ -1628,7 +1628,7 @@
     0x0061, 0x0061, 0x0061, 0x0061, 0x0061, 0x0061, 0x0061, 0x0063,
     0x0065, 0x0065, 0x0065, 0x0065, 0x0069, 0x0069, 0x0069, 0x0069,
     0x0064, 0x006e, 0x006f, 0x006f, 0x006f, 0x006f, 0x006f, 0x8180,
-    0x006f, 0x0075, 0x0075, 0x0075, 0x0075, 0x00fd, 0x00fe, 0x00ff,
+    0x006f, 0x0075, 0x0075, 0x0075, 0x0075, 0x0079, 0x00fe, 0x0079,
     /* 0x0100 .. 0x01ff */
     0x0041, 0x0061, 0x0041, 0x0061, 0x0041, 0x0061, 0x0043, 0x0063,
     0x0043, 0x0063, 0x0043, 0x0063, 0x0043, 0x0063, 0x0044, 0x0064,