CLDR-11982 lv collation (#3469)

Use the collation rules described in the LVS 24:1993 standard.
Co-authored-by: Markus Scherer <[email protected]>

common/collation/lv.xml

@@ -11,17 +11,21 @@ For terms of use, see http://www.unicode.org/copyright.html
 		<language type="lv" /> 
 	</identity>
 		<collations  >
-			<collation type="standard" references="Dzintra Kalniņa: Latvian-English Dictionary ISBN 9984-700-52-6">
+			<collation type="standard" references="LVS 24:1993, LATVIAN LANGUAGE SUPPORT FOR COMPUTERS">
 				<cr><![CDATA[
-					&[before 1]D<č<<<Č
-					&[before 1]H<ģ<<<Ģ
-					&I<<y<<<Y
-					&[before 1]L<ķ<<<Ķ
-					&[before 1]M<ļ<<<Ļ
-					&[before 1]O<ņ<<<Ņ
-					&[before 1]S<ŗ<<<Ŗ
-					&[before 1]T<š<<<Š
-					&[before 1]Ʒ<ž<<<Ž
+					&A<ā<<<Ā
+					&C<č<<<Č
+					&E<ē<<<Ē
+					&G<ģ<<<Ģ
+					&I<y<<<Y<ī<<<Ī
+					&K<ķ<<<Ķ
+					&L<ļ<<<Ļ
+					&N<ņ<<<Ņ
+					&O<ō<<<Ō
+					&R<ŗ<<<Ŗ
+					&S<š<<<Š
+					&U<ū<<<Ū
+					&Z<ž<<<Ž
 				]]></cr>
 			</collation>
 		</collations>