patch 9.0.2127: translation Makefiles can be improved

Problem:  translation Makefiles can be improved
Solution: Modified and extended po-related Makefiles and
          related files

closes: #13518

Signed-off-by: RestorerZ <restorer@mail2k.ru>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/po/sjiscorr.c b/src/po/sjiscorr.c
index 7aa0533..c6c3983 100644
--- a/src/po/sjiscorr.c
+++ b/src/po/sjiscorr.c
@@ -19,12 +19,12 @@
 			if (strncmp(p, "charset=utf-8", 13) == 0
 				|| strncmp(p, "charset=UTF-8", 13) == 0)
 			{
-				fputs("charset=cp932", stdout);
+				fputs("charset=CP932", stdout);
 				p += 12;
 			}
 			else if (strncmp(p, "# Original translations", 23) == 0)
 			{
-				fputs("# generated from ja.po, DO NOT EDIT", stdout);
+				fputs("# Generated from ja.po, DO NOT EDIT.", stdout);
 				while (p[1] != '\n')
 					++p;
 			}