Applied the changes which somehow vanished during my last merge. Thanks goes
to Marci for noticing this. In detail:
- added amsmath and amssymb latex packages for latex documentation
- src/demo is also scanned for doxygen input files
2 UnionFind<graph_type, NodeIt> uf( G, G.NodeIt());
3 NodeUnionFind<graph_type> uf( G);
6 find visszaadja a nagyfonokot, altalaban kell e a belso tarolobol tudni visszafejteni az ott levo pontot.
8 esetleg merge(Nodeit fonoka, NodeIt fonokb)
11 find: visszaad egy egészet
13 findAndMerge: visszaad egy boolt