Part 2 of the collect-utils library, now also used for collect2.
* Makefile.in (COLLECT2_OBJS): Add collect-utils.o.
(LTO_WRAPPER_OBJS): New variable.
(lto-wrapper$(exeext)): Use it.
* collect2.c: Include "collect-utils.h".
(verbose, debug): Remove variables.
(at_file_supplied): No longer static.
(tool_name): New variable.
(do_wait, fork_execute, maybe_unlink): Don't declare.
(tool_cleanup): No longer static.
(notice): Remove function.
(maybe_run_lto_and_relink, main, do_dsymutil): Add new arg to
fork_execute calls.
(collect_wait, do_wait, collect_execute): Remove functions.
(maybe_unlink): No longer static.
* collect2.h (verbose, debug): Don't declare.
(at_file_supplied): Declare.
* collect-utils.c (utils_cleanup): New arg from_signal. All callers
changed.
(collect_execute): Replace with implementation from collect2, plus a
new arg use_atfile. All callers changed.
(collect_wait): Replace with implementation from collect2.
(maybe_unlink_file): Remove function.
(fork_execute): Replace with implementation from collect2, plus a
new arg use_atfile. All callers changed.
(do_wait): Add call to utils_cleanup to the error path.
* collect-utils.h (collect_execute, fork_execute, utils_cleanup,
tool_cleanup): Adjust declarations.
* lto-wrapper.c (tool_cleanup): Add unused bool argument.
* tlink.c: Include "collect-utils.h".
(tlink_execute): New arg use_atfile. All callers changed.
(tlink_init, tlink_execute): Remove declarations.
From-SVN: r212020