Track CLDR-26 updates to currency data.

source/data/curr/it.txt : The "Svizzero" for CHF is now lowercase.
source/data/curr/fr_CA.txt : US dollars are now "$ US".
source/data/curr/en_GB.txt : Removed GB specific override ("$") for USD.
    We now fall back to en_001 for USD, which is "US$".

(cherry picked from commit 85e839fc507baedf3a7b99c3269ab54208eb6f25)

Change-Id: I05447911a88bd8d9d8afc6acc2fd18c2cb6e4bcc
2 files changed