Change CJK encoding aliases to their most popular variation of

hyphen and underscores in consistency of non-CJK aliases.
(Spotted by Mike Brown at SF #969415)

Doc/lib/libcodecs.tex

@@ -545,7 +545,7 @@ exist:
         {English}
 
 \lineiii{big5}
-        {big5_tw, csbig5}
+        {big5-tw, csbig5}
         {Traditional Chinese}
 
 \lineiii{cp037}
@@ -633,7 +633,7 @@ exist:
         {Greek}
 
 \lineiii{cp932}
-        {932, ms932, mskanji, ms_kanji}
+        {932, ms932, mskanji, ms-kanji}
         {Japanese}
 
 \lineiii{cp949}
@@ -693,7 +693,7 @@ exist:
         {Vietnamese}
 
 \lineiii{euc_jp}
-        {eucjp, ujis, u_jis}
+        {eucjp, ujis, u-jis}
         {Japanese}
 
 \lineiii{euc_jisx0213}
@@ -701,12 +701,12 @@ exist:
         {Japanese}
 
 \lineiii{euc_kr}
-        {euckr, korean, ksc5601, ks_c_5601, ks_c_5601_1987, ksx1001, ks_x_1001}
+        {euckr, korean, ksc5601, ks_c-5601, ks_c-5601-1987, ksx1001, ks_x-1001}
         {Korean}
 
 \lineiii{gb2312}
-        {chinese, csiso58gb231280, euc_cn, euccn, eucgb2312_cn, gb2312_1980,
-         gb2312_80, iso_ir_58}
+        {chinese, csiso58gb231280, euc-cn, euccn, eucgb2312-cn, gb2312-1980,
+         gb2312-80, iso-ir-58}
         {Simplified Chinese}
 
 \lineiii{gbk}
@@ -714,35 +714,35 @@ exist:
         {Unified Chinese}
 
 \lineiii{gb18030}
-        {gb18030_2000}
+        {gb18030-2000}
         {Unified Chinese}
 
 \lineiii{hz}
-        {hzgb, hz_gb, hz_gb_2312}
+        {hzgb, hz-gb, hz-gb-2312}
         {Simplified Chinese}
 
 \lineiii{iso2022_jp}
-        {csiso2022jp, iso2022jp, iso_2022_jp}
+        {csiso2022jp, iso2022jp, iso-2022-jp}
         {Japanese}
 
 \lineiii{iso2022_jp_1}
-        {iso2022jp_1, iso_2022_jp_1}
+        {iso2022jp-1, iso-2022-jp-1}
         {Japanese}
 
 \lineiii{iso2022_jp_2}
-        {iso2022jp_2, iso_2022_jp_2}
+        {iso2022jp-2, iso-2022-jp-2}
         {Japanese, Korean, Simplified Chinese, Western Europe, Greek}
 
 \lineiii{iso2022_jp_3}
-        {iso2022jp_3, iso_2022_jp_3}
+        {iso2022jp-3, iso-2022-jp-3}
         {Japanese}
 
 \lineiii{iso2022_jp_ext}
-        {iso2022jp_ext, iso_2022_jp_ext}
+        {iso2022jp-ext, iso-2022-jp-ext}
         {Japanese}
 
 \lineiii{iso2022_kr}
-        {csiso2022kr, iso2022kr, iso_2022_kr}
+        {csiso2022kr, iso2022kr, iso-2022-kr}
         {Korean}
 
 \lineiii{latin_1}