* support for break-bp-L (bp = backward propagation)
* support for break-bp-L (bp = backward propagation)

svn path=/strategoxt/trunk/; revision=15280

Apanatshka/strategoxt,lichtemo/strategoxt,lichtemo/strategoxt,metaborg/strategoxt,Apanatshka/strategoxt,metaborg/strategoxt,metaborg/strategoxt,Apanatshka/strategoxt,Apanatshka/strategoxt,lichtemo/strategoxt,metaborg/strategoxt,Apanatshka/strategoxt,lichtemo/strategoxt,metaborg/strategoxt,lichtemo/strategoxt