utf8 conversion: fix up seperation of locale and doc building

Docs (help and the dtinfo guides) are now always built using the
ISO8859-1 locale.  To support UTF-8, our docbook needs to be updated
to something from this century, ideally this decade.  In addition, a
conversion to XML would also be required as a result.  So, until that
happens, use ISO8859-1 for docs.

However, other locale information, like message catalogs, resource
files, and the like are now converted to UTF-8.

All supported languages are now built by default on linux again.

cde/doc/it_IT.ISO8859-1/guides/Imakefile

@@ -5,5 +5,6 @@ XCOMM $XConsortium: Imakefile /main/8 1996/12/17 15:13:39 rws $
 #define HasinfoUGuide
 #define HassysAdminGuide
 
+#define BuildingDocs YES
 #include "../../../programs/localized/templates/Italian.tmpl"
 #include "../../common/guides/Imakefile.tmpl"

cde/doc/it_IT.ISO8859-1/help/Imakefile

@@ -19,5 +19,6 @@ XCOMM $XConsortium: Imakefile /main/6 1996/12/17 20:17:04 rws $
 #define HasTerminal
 #define HasTextedit
 
+#define BuildingDocs YES
 #include "../../../programs/localized/templates/Italian.tmpl"
 #include "../../common/help/Imakefile.tmpl"