* encoding.c (Init_Encoding): ISO-8859-1 is no longer a replica.
* regenc.h (OnigEncodingDefine): names of extension and encoding can
differ.
* enc/Makefile.in: always shared.
* enc/depend (deffile): should not upcase.
* enc/{ascii,euc_jp,sjis,utf8,iso_8859_{1..16}}.c: fix for Init.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14376 b2dd03c8-39d4-4d8f-98ff-823fe69b080e