Update langInfo.txt with LocaleDistanceBuilder tool

Run from external/icu/icu4j:
$ ant icu4jJar tools
$ java -cp ./tools/misc/out/lib/icu4j-tools.jar:`pwd`/icu4j.jar com.ibm.icu.dev.tool.locale.LocaleDistanceBuilder

Test: n/a
Change-Id: If01cef96bc59df8eb372bca9da7b6b1da9d6d830
1 file changed