build: Make distclean-local remove more espeak-ng-data files

Use parameters instead of globals. Note the change from sizeof(word_phonemes) to size_word_phonemes.

The file will be organized to have one callable function only. This
should make code structure simpler.

Existing code will be changed to use function parameters instead of
global variables.

Possible problems include too much dependencies with numbers.c.

cmn (Mandarin chinese) has been broken since 4825905.

This fix makes mandarin behave more like Cantonese. Instead of
translating characters, we search for dictionary matches.

The functionality of normal vs Chao tones should be investigated more.
Looks like latin characters as pinyin still uses Chao tones whereas
the characters in cmn_list and cmn_listx do not.

See #1044 for discussion. See also #1028 and #1163.

Myanmar/Burmese (my) uses phonemetable ph_myanmar instead.

Fixup for commit 89768755.

This is the only reference to the language.

This is the only reference to the language.

Language 'bo' has no data files. Tibetan might have been supported
before but clearly isn't any longer.

ReadClause() is very long and should be shortened for code readability

It's used only in readclause.c

TODO: Rename so the meaning of the function is easier to understand.

If for whatever reason the build got broken, the recompilation of data
would fail because espeak-ng would be unable to re-open the current
files. One is then stuck until removing the files by hand. Let's make "make
distclean" clear these all to be sure to be able to restart from zero.

I added some number for Hebrew because is missing probably

E.g. yue does not have many thousands separators, so the value may be very
large, possibly as much as maxint.

utf8_in2, when working in backward mode, is assuming that we are giving
the address of the last byte of the previous character (see all other
calls to utf8_in2). Otherwise, utf8_in2 returns the size of the current
multibyte character instead of that of the previous multibyte character.

This first reverts "Fix number_buf buffer overflow"
(commit ada93e2db0)

This for loop is apparently actually expected to to skip over NUL
characters.

Fixes #1302

Instead, this limits number processing to 32 digits, as break_numbers does
not support more and would provide bogus result with further digits.

Also fix the signedness of break_numbers so that the 32th bit
actually effectively works.

Otherwise if e.g. only mbrola-fr4 is installed, when the application tries
to load voice en-french, it actually ends up trying to load mb-fr1-en.