The replacement tests for bs, hr, and sr are no longer marked as
broken as they work using the old code. The mk tests keep the
broken annotation, as they don't work in the old code either.

This reverts commit 801a8d197c.
This reverts commit 64d5701e5e.
This reverts commit 3b51ebf617.
This reverts commit 1fd235d2c0.
This reverts commit 9f0667de86.

Fixes #511.

When .replace rule is used and -X switch is passed in runtime,
replaced characters should be shown in trace output.

It is set in voices.c but never used. docs/voices.md indicates that the keyword intonation only takes one parameter, confirming that option_tone2 is unused.

If ph_code is not located in the phoneme_tab, the resulting ph
value will be NULL. This does not normally happen, but it can
happen if word_phonemes contains garbage data, such as with the
1.49.2 multi-word logic when processing words like 'riposted'.

If the list file contains a text replacement to another
entry in the list file, e.g.:

	ripost     riposte $text
	riposte    rI#p0st

calling it from a prefix or suffix rule such as 'riposted'
causes word_out[0] to be NULL, as TranslateWord3 has the
information needed to perform the mapping. In this case,
no phonemes have been written in this loop and the phonemes
have been calculated, so don't override them.

See issue #8, https://github.com/espeak-ng/espeak-ng/issues/8

There might still be some ints that could be changed to boolean.

Possible regressions in fifo.c:
int fifo_is_busy() and int fifo_is_command_enabled() used to return an int. Now they return a boolean. This might cause problems on systems where stdbool true/false is something else than 1/0.

This reverts commit 119c200e00.