scripts APIs, bugfixes

this is a bugfix release that also adds a few useful scripting APIs. thanks to @xedi25 for requesting the scripting features. notable changes:

• fix the prefix match algorithm for traversing the btree in some cases
• add analysis that extracts exports and imports
• add IDAPython APIs:
  • get_entry_qty()
  • get_entry_ordinal(idx)
  • get_entry(ord)
  • get_entry_name(ord)
  • get_entry_forwarder(ord)
  • get_import_module_qty()
  • get_import_module_name(mod_index)
  • enum_import_names(mod_index, py_cb)
  • GetType