8189633: Missing -Xcheck:jni checking for DeleteWeakGlobalRef
Summary: Added validity check on the handle before deleting it.
Reviewed-by: dholmes, dcubed
## (1)entries that exist only in MS932DB.c2b.private# (diff result of MS932DB.b2c.private and MS932DB.c2b.private)# (2)added the jis0201 c->b only entries# u+203e -> 0x7e# u+00a5 -> 0x5c#0x7e 0x203e0x5c 0x00a5#0x8143 0x00b8 # CEDILLA0x8145 0x00b7 # MIDDLE DOT0x8150 0x00af # MACRON0x8191 0x00a2 # CENT SIGN0x8192 0x00a3 # POUND SIGN0x81ca 0x00ac # NOT SIGN0x81e1 0x00ab # LEFT-POINTING DOUBLE ANGLE QUOTATION MARK0x81e2 0x00bb # RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK0x8394 0x3094 # HIRAGANA LETTER VU0x83ca 0x00b5 # MICRO SIGN