tdf#112750: Fix disappearing/insufficient hyphenation points for bg-BG

Also changed encoding of Bulgarian hyphenation dictionary from CP1251 to
UTF-8

Change-Id: Ic2add1198c281c83d2e8230a1b14273fd22d85f3
Signed-off-by: Hristo Hristov <h.hristov@icobgr.info>
Reviewed-on: https://gerrit.libreoffice.org/43000
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
Tested-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>

Author: StoyanDimitrov

bg_BG/description.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <description xmlns="http://openoffice.org/extensions/description/2006" xmlns:d="http://openoffice.org/extensions/description/2006"  xmlns:xlink="http://www.w3.org/1999/xlink">
-    <version value="2011.08.30" />
+    <version value="2017.09.30" />
     <identifier value="org.openoffice.bg.hunspell.dictionaries" />
     <display-name>
         <name lang="en-US">Bulgarian spelling dictionary, hyphenation rules, and thesaurus</name>