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

BINARIES = kruskal_test ma_order_test

INCLUDEDIRS= -I. -I.. -I../../include -I../{marci,jacint,alpar,klao,akos}

include ../makefile