Conflicts:
	CMakeLists.txt

2) Arithmetics/CMakeLists.txt edited.
3) MultiPrecisionTest.cpp added into UnitTests.
4) UnitTests/CMakeLists.txt edited.

2) TODO: void printNumber(), overload ostream& operator <<

* parallel-reduction:
  Fixed ArrayOperations::compareMemory for MIC
  Fixed parallel reduction for MIC
  General parallel reduction on host
  Refactoring parallel reduction operations

2) MultiPrecision.cpp - implementation of number inits and arithmetic operators finished
3) TODO: Operators overloading

2. All files above implemented and refactored in QuadDouble class.

Merge branch 'arithmetics' of ssh://geraldine.fjfi.cvut.cz:2222/local/projects/tnl/tnl into arithmetics