generate maketest.g using AutoDoc

+ "homalg" is now an entity used in documentation
+ maketest.commands := HOMALG.SuppressParityInViewObjForCommutativeStructureObjects := true;
+ removed (left) from output in examples/doc
+ updated doc/clean
needs AutoDoc v2013.10.29
added missing examples/doc/*.g in makefile rule doc/manual.six
@Description at top of docu chunk
makedoc.g now creates VERSION
updated doc/clean
comply with MatricesForHomalg v2013.10.25

(the constructor / now does not compute a distinguished basis of the ring relations)
updated makefile to have gap in PATH

(problem specific to Eva's laptop)
we need the new AutoDoc v2013.11.06

it support @DoNotReadRestOfFile