libglib2: the system PCRE needs to have UTF and UCP enabled

If glib2 is compiled with the system PCRE instead of the included
copy, then that system PCRE needs to have support for UTF-8 and
Unicode properties enabled. Otherwise you will get such warnings
at run-time:

GLib-CRITICAL **: PCRE library is compiled without UTF8 support
GLib-CRITICAL **: PCRE library is compiled without UTF8 properties support

Signed-off-by: Sven Neumann <neumann@teufel.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libglib2/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_LIBGLIB2
 	select BR2_PACKAGE_GETTEXT if BR2_NEEDS_GETTEXT
 	select BR2_PACKAGE_LIBICONV if !BR2_ENABLE_LOCALE
 	select BR2_PACKAGE_LIBFFI
+	select BR2_PACKAGE_PCRE_UCP if BR2_PACKAGE_PCRE
 	select BR2_PACKAGE_ZLIB
 	depends on BR2_USE_WCHAR # gettext
 	depends on BR2_TOOLCHAIN_HAS_THREADS