Removing this dependence allows our Getting Started instructions to still work.
It requires some minor code duplication, but otherwise we'd have to change a
bunch of documentation.
1: get the right position for methods from the JDT AST
2: more seriously, there was a nasty bug in how source positions got
mapped in unwound code: mappings were wrong for instructions that
were the result of duplicating code to replicate unwind handling in
exceptional and non-local exits.
Julian Dolby
Manu Sridharan