Version 26 of CLDR

This is the start of updating the code for version 26 of the CLDR data
set.

I have removed collation as  it was incomplete on the version 25 data

This commit has broken tests the following commits will address that
Fix Calendar tests for CLDR version 26

All changes in the test results where due to cosmetic changes in the
output of the data
CLDR v26  new names

Some additional names and changes to existing names
CLDR v26 Date time formats

Update output to match new format data
CLDR v26 Overrides

Arabic date information is now more complete