change Gaelic [gd-GB] QuotationStart to U+2019

Which is "’" RIGHT SINGLE QUOTATION MARK but due to Gaelic use of '
apostrophe as in a' d' the activated AutoCorrection in an otherwise
English context turns it into a typographic left single quotation mark,
which looks odd.

Per request of Michael Bauer of the l10n team.

Change-Id: If6b542636aad2a05b6f4b58f354b96becbf5f8dc
diff --git a/i18npool/source/localedata/data/gd_GB.xml b/i18npool/source/localedata/data/gd_GB.xml
index ae0d854..5a52ed0 100644
--- a/i18npool/source/localedata/data/gd_GB.xml
+++ b/i18npool/source/localedata/data/gd_GB.xml
@@ -42,7 +42,7 @@
      <LongDateYearSeparator> </LongDateYearSeparator>
    </Separators>
    <Markers>
      <QuotationStart></QuotationStart>
      <QuotationStart></QuotationStart>
      <QuotationEnd>’</QuotationEnd>
      <DoubleQuotationStart>“</DoubleQuotationStart>
      <DoubleQuotationEnd>”</DoubleQuotationEnd>