find symbols in proper scope when debugging (bug #40397) * lex.h (lexical_feedback::symbol_table_context::init_scope): Delete member variable and all uses. (lexical_feedback::symbol_table_context::pop): Assert that the context is not empty before popping. (lexical_feedback::symbol_table_context::push): Use default argument. (lexical_feedback::symbol_table_context::curr_scope): If empty, return symbol_table::current_scope, not the initial scope in effect when the object is created. * oct-parse.in.yy (octave_base_parser::make_anon_fcn_handle, octave_base_parser::recover_from_parsing_function): Don't check for empty lexer.symtab_context here.

FCN_FILE_DIRS += @ftp

@ftp_FCN_FILES = \
  @ftp/ascii.m \
  @ftp/binary.m  \
  @ftp/cd.m  \
  @ftp/close.m  \
  @ftp/delete.m  \
  @ftp/dir.m  \
  @ftp/display.m  \
  @ftp/ftp.m  \
  @ftp/loadobj.m  \
  @ftp/mget.m  \
  @ftp/mkdir.m  \
  @ftp/mput.m  \
  @ftp/rename.m  \
  @ftp/rmdir.m  \
  @ftp/saveobj.m

FCN_FILES += $(@ftp_FCN_FILES)

PKG_ADD_FILES += @ftp/PKG_ADD

DIRSTAMP_FILES += @ftp/$(octave_dirstamp)