o ensure that the label's local "jumpbuf" variable gets moved to the
parentfpstruct soon enough
o don't generate global symbols for interprocedural labels: they're not
necessary if they are only used via setjmp/longjmp (all references are
local in that case), and if they are referenced via an assembler block
then we'll have to handle them by passing a blockaddress() expression
as parameter to that assembler block (which does not require a global
symbol, but which is not yet implemented)
git-svn-id: trunk@34946 -