sogo/SOPE/NGCards/TimeZones/UPDATING

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To updated the timezone files:
1- get the vzic tool from https://github.com/libical/vzic
2- update the Makefile
PRODUCT_ID = -//Inverse inc.//NONSGML IANA 2016h//EN
TZID_PREFIX =
3- get the zone files, for example:
mkdir /tmp/zones
cd /tmp/zones
wget http://www.iana.org/time-zones/repository/releases/tzdata2016i.tar.gz
tar -zxvf tzdata2016i.tar.gz
4- compile and run the conversion tool
make -B
./vzic --olson-dir /tmp/zones --output-dir ../SOGo/SOPE/NGCards/TimeZones/
5- cleanup
cd ../SOGo/SOPE/NGCards/TimeZones/
rm -f zones.h zones.tab