add org.strategoxt.tools package to MANIFEST exported packages
add org.strategoxt.tools package to MANIFEST exported packages

svn path=/strategoxt-java-backend/trunk/; revision=21379

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