localedata: bg_BG: use colon as time separator [BZ #19385]

The only official source is the "Official spelling dictionary of the
Bulgarian language, Prosveta 2012", which states there are three ways
to separate time components: comma, colon and dot. That same dictionary
doesn't say which one is preferred.

So I turned to the mailing list of the translators of free software in
Bulgarian. The consensus is that colon is the only separator that is
widely used in Bulgarian texts and everything else will just be confusing.

URL: http://lists.ludost.net/pipermail/dict/2015-December/000538.html

localedata/ChangeLog

@@ -1,3 +1,9 @@
+2015-12-29  Damyan Ivanov  <dam+gnu@ktnx.net>
+
+	[BZ #19385]
+	* locales/bg_BG (t_fmt): Change U002C (comma) to U003A (colon).
+	(t_fmt_ampm): Likewise.
+
 2015-12-11  Joseph Myers  <joseph@codesourcery.com>
 
 	[BZ #18491]

localedata/locales/bg_BG

@@ -185,9 +185,9 @@ LC_TIME
 d_t_fmt    "<U0025><U0078><U0020><U0028><U0025><U0061><U0029><U0020>/
 <U0025><U0058><U0020><U0025><U005A>"
 d_fmt      "<U0025><U0065><U002E><U0025><U006D><U002E><U0025><U0059>"
-t_fmt      "<U0025><U006B><U002C><U0025><U004D><U002C><U0025><U0053>"
+t_fmt      "<U0025><U006B><U003A><U0025><U004D><U003A><U0025><U0053>"
 am_pm      "";""
-t_fmt_ampm "<U0025><U006C><U002C><U0025><U004D><U002C><U0025><U0053>"
+t_fmt_ampm "<U0025><U006C><U003A><U0025><U004D><U003A><U0025><U0053>"
 date_fmt   "<U0025><U0061><U0020><U0025><U0062><U0020><U0025><U0065>/
 <U0020><U0025><U0048><U003A><U0025><U004D><U003A><U0025><U0053><U0020>/
 <U0025><U005A><U0020><U0025><U0059>"