finally in top level statements have issues

[skyfex]

The following code fails in devel:

finally: 
  echo "B"

whiskey.nim(1, 0) Error: invalid expression: '
finally: 
  echo "B"'

Add a try-except statement before it, and it compiles:

try:
  discard
except EOS:
  discard

finally: 
  echo "B"

[skyfex]

This is due to the parser parsing each top level statement as a separate expression. If the whole module had been parsed as a statement-list, it would've worked.

But I don't feel comfortable making these changes. Don't want to mess too much with such core parts of the compiler.