replace variables with bools

replace variables with bools

Each variable is limited to a single function.
Each was only set to 0 or 1.

Fucntions:
	address_header_decode
	alternative_handler
	attach_forward_bodies
	check_host
	ci_send_message
	clean_references
	copy_clearsigned
	crypt_getkeybyaddr
	crypt_select_key
	crypt_write_signed
	disable_coredumps
	display_line
	do_uncolor
	draw_sidebar
	eat_message_range
	eat_range
	envelope_defaults
	expand_aliases_r
	get_token
	handle_docline
	imap_auth_sasl
	imap_browse
	imap_conn_find
	imap_fast_trash
	imap_fetch_message
	imap_make_msg_set
	imap_pretty_mailbox
	imap_read_headers
	imap_read_literal
	init_common
	init_menu
	maildir_check_mailbox
	main
	mbox_check_mailbox
	menu_redraw_index
	mh_rewrite_message
	mix_check_message
	mix_make_chain
	mutt_account_hook
	mutt_alias_menu
	mutt_attach_reply
	mutt_body_handler
	mutt_buffy_check
	mutt_builtin_editor
	mutt_check_simple
	mutt_compose_attachment
	mutt_copy_hdr
	mutt_count_body_parts
	mutt_display_message
	mutt_draw_statusline
	mutt_edit_attachment
	mutt_edit_headers
	mutt_expand_fmt
	mutt_FormatString
	mutt_index_menu
	mutt_is_application_smime
	mutt_multi_choice
	mutt_pager
	mutt_parse_color
	mutt_parse_hook
	mutt_parse_mono
	mutt_parse_multipart
	mutt_print_attachment
	mutt_progress_update
	mutt_remove_duplicates
	mutt_sasl_start
	mutt_signed_handler
	mutt_view_attachment
	mutt_write_fcc
	mutt_write_rfc822_header
	mutt_yesorno
	nm_check_mailbox
	nm_nonctx_get_count
	nm_sync_mailbox
	nntp_capabilities
	nntp_hcache_update
	nntp_newsrc_gen_entries
	nntp_open_connection
	parse_parameters
	parse_pub_line
	parse_regex
	pgpring_dump_keyblock
	pgp_application_pgp_handler
	pgp_copy_clearsigned
	pgp_decrypt_mime
	pgp_find_keys
	pgp_getkeybyaddr
	pgp_getkeybystr
	pgp_gpgme_application_handler
	pgp_gpgme_decrypt_mime
	pgp_read_packet
	pgp_select_key
	pgp_sign_message
	pgp_traditional_encryptsign
	pop_fetch_headers
	print_smime_keyinfo
	qp_decode_line
	query_menu
	reopen_mailbox
	resolve_color
	resolve_types
	rfc1524_expand_filename
	rfc2047_decode
	rfc2231_decode_parameters
	select_msg
	show_one_sig_status
	shrink_histfile
	smime_getkeys
	smime_select_key
	ssl_init
	tls_init
	utf8_to_utf7
	_mutt_expand_path
	_mutt_parse_color
	_mutt_traverse_thread