(longopts, print_help, main, process_file): put absolute filenames
in the tag file if the -A --absolute-pathnames option is used.
(print_help): alfabetically order the options.
(malloc, realloc, strcpy, strncpy, strcmp): remove extern declar.
(schedule): Don't return a value.
(sigcatch): Reestablish the handler first.
(getevent): Always call notify at the end.
(notify): Defer alarms around the whole body of function.
(main): Don't request SIGIO, and don't handle it.
Loop calling getevent.
(sigcatch): Delete code to handle SIGIO.
If defer_alarms is set, don't call notify, just set alarm_deferred.
(getevent): Use read, not getchar. Handle EINTR and EAGAIN.
Set defer_alarms around realloc and schedule.
If alarm_deferred gets set, call notify.
Likewise if this event is the only pending event.
Make buf and buf_size global variables.
Don't malloc buf if it is already non-zero.
(schedule): Just exit if run out of memory.
Return the number of events.
(signal) [_CX_UX]: Add #undef.
(write_c_args): Take new arg FUNC. Make output look like lisp call
prototypes: (function ARG1 ARG2), upcasing arg names.
(scan_c_file): Pass BUF to write_c_args for FUNC arg.
stab_type, add_keyword, C_reate_stab, C_create_stabs): deleted.
Use gperf generated hash table instead of linked list.
(C_stab_entry, hash, in_word_set, get_C_stab, C_symtype): added.
Mostly code generated by gperf.
(consider_token): removed unused parameter `lp'.
(PF_funcs, getit): allow subroutine and similar declarations
to span multiple lines.
(C_entries): check for newline if inchar to avoid bus errors.
(process_file, find_entries): distinguish among nonexistent
and not regular file.
* etags.c: (C_entries): Keep track of ()-parenthesis level so that
functions returning a pointer to a function, a la `signal', can be
parsed. This also required new state `fstartlist' to `FUNCST'.
(SAVE_TOKEN, RESTORE_TOKEN, TOKEN_SAVED_P): 1-deep token save stack.
(C_entries, CNL): use it to isolate preprocessor directive processing
from the other state engines.
(begtk): add '~', for C++ class destructors.
directory. Only chmod and chgrp files that we installed, which
excludes ${INSTALLABLE_SCRIPTS}. They go in ${bindir}.
(INSTALLFLAGS): Deleted definition, since it is an unused variable now.
* etags.c (C_entries): is_func is initialised here instead of in
consider_token for the sake of the yacc rules section.
(C_entries): Now class, struct, enum, union and typedef produce
named tags.
