* Beginning of the end for HFCs in Europe - Hedegaard
* HFCs trap 23,000 times more heat than CO2
* Law in force by 2015 to cut EU HFCs by 79 pct by 2030
By Michael Szabo and Barbara Lewis
LONDON/BRUSSELS March 12 (Reuters) - The European Parliament on Wednesday backed a law to curb the use of "super" greenhouse ...