Documentation: folder name updated from espeak-data to espeak-ng-data

docs/add_language.md

 | dictsource/fr_list           |create  |
 | dictsource/fr_rules          |create  |
 | dictsource/fr_extrc          |create (optional) |
-| espeak-data/voices/roa/fr    |create  |
+| espeak-ng-data/voices/roa/fr    |create  |
 
 where:
 
 
 ### Voice File
 
-E.g. `espeak-data/voices/roa/fr` is the voice file for French.
+E.g. `espeak-ng-data/voices/roa/fr` is the voice file for French.
 This gives the language name and may set some options.
 
-Each language needs a voice file in `espeak-data/voices` grouped by the
+Each language needs a voice file in `espeak-ng-data/voices` grouped by the
 [language family](#language-family). The filename of the default voice for a
 language should be the same as the language code (e.g. `fr` for French).
 
 	language fr
 
 This language code specifies which phoneme table and dictionary to use
-(i.e. `phonemetable fr` and `espeak-data/fr_dict`) to be used. If
+(i.e. `phonemetable fr` and `espeak-ng-data/fr_dict`) to be used. If
 needed, these can be overridden by `phonemes` and `dictionary`
 attributes in the voice file. For example you may want to start the
 implementation of a new language by using the phoneme table of an
 [Dictionary](dictionary.md).
 
 The `fr_rules` and `fr_list` files are compiled to produce the
-`espeak-data/fr_dict` file, which eSpeak uses when it is speaking.
+`espeak-ng-data/fr_dict` file, which eSpeak uses when it is speaking.
 
 Once the language's phonemes have been defined, then pronunciation
 dictionary data can be produced in order to translate the language's
 source text into phonemes. This consists of two source files:
 `fr_rules` (the spelling to phoneme rules) and `fr_list` (an
 exceptions list, and attributes of certain words). The corresponding
-compiled data file is `espeak-data/fr_dict` which is produced from
+compiled data file is `espeak-ng-data/fr_dict` which is produced from
 the `fr_rules` and `fr_list` sources by the command:
 
 	espeak-ng --compile=fr
 options. For a new language, you would add its language code and the
 required options in `SetTranslator()`. However, this may not be necessary
 during testing because most of the options can also be set in the voice
-file in espeak-data/voices (see [Voice Files](voices.md)).
+file in espeak-ng-data/voices (see [Voice Files](voices.md)).
 
 ## Compiling Rules File for Debugging
 

docs/dictionary.md

   various other properties. The source files are: `<language>_list` (e.g.
   `en_list`) and optionally `<language>_extra` (e.g. `en_extra`).
 
-These files are compiled into the file `<language>_dict`  in the espeak-data
-directory (e.g. `espeak-data/en_dict`).
+These files are compiled into the file `<language>_dict`  in the espeak-ng-data
+directory (e.g. `espeak-ng-data/en_dict`).
 
 ## Phoneme names
 

docs/intonation.md

 ## Clauses
 
 The tunes which are used for a language can be specified by using a
-`tunes` statement in a voice file in `espeak-data/voices`. e.g.:
+`tunes` statement in a voice file in `espeak-ng-data/voices`. e.g.:
 
 	tunes   s1  c1  q1  e1
 

docs/mbrola.md

 
 where `xxx` is the name of a Mbrola voice (e.g. `mb-en1` for the Mbrola
 `en1` English voice). These voice files are in eSpeak NG's directory
-`espeak-data/voices/mbrola`.
+`espeak-ng-data/voices/mbrola`.
 
 The installation instructions below use the Mbrola voice "en1" as an
 example. You can use other mbrola voices for which there is an
-equivalent eSpeak NG voice in `espeak-data/voices/mbrola`.
+equivalent eSpeak NG voice in `espeak-ng-data/voices/mbrola`.
 
 There are some additional eSpeak NG Mbrola voices which speak English text
 using a Mbrola voice for a different language. These contain the name of
     [http://www.tcts.fpms.ac.be/synthesis/mbrola/mbrcopybin.html](http://www.tcts.fpms.ac.be/synthesis/mbrola/mbrcopybin.html).
 
 4.  Unpack the archive, and copy the `en1` data file (not the whole "en1" directory) into
-    `C:/Program Files/eSpeak/espeak-data/mbrola`.
+    `C:/Program Files/eSpeak/espeak-ng-data/mbrola`.
 
 4.  Use the voice `espeak-MB-EN1` from the list of SAPI5 voices.
 
 
 4.  Unpack the archive, and copy the `en1` data file (not the whole "en1" directory) to `/usr/share/mbrola/en1`.
 
-    __NOTE:__ eSpeak will look for mbrola voices firstly in `espeak-data/mbrola` and then in `/usr/share/mbrola`.
+    __NOTE:__ eSpeak will look for mbrola voices firstly in `espeak-ng-data/mbrola` and then in `/usr/share/mbrola`.
 
 ## Usage
 
 
 ## Mbrola Voice Files
 
-eSpeak NG's voice files for Mbrola voices are in directory  `espeak-data/voices/mbrola`.  
+eSpeak NG's voice files for Mbrola voices are in directory  `espeak-ng-data/voices/mbrola`.  
 They contain a line: `mbrola <voice> <translation>`
 
 e.g.
 * \<translation\> is a translation file to convert between eSpeak phonemes and
   the equivalent Mbrola phonemes.
 
-These are kept in: `espeak-data/mbrola_ph`
+These are kept in: `espeak-ng-data/mbrola_ph`
 
 ## Mbrola Phoneme Translation Data
 

docs/voices.md

 dialect) together with various attributes that affect the
 characteristics of the voice quality and how the language is spoken.
 
-Voice files are located in the `espeak-data/voices` directory, and are
+Voice files are located in the `espeak-ng-data/voices` directory, and are
 grouped by the [ISO 639-5](https://en.wikipedia.org/wiki/ISO_639-5)
 language family of the language being specified in the voice files.
 See also Wikipedia's
 consonants (such as `[n]` and `[l]`). Unvoiced sounds such as `[s]` are
 unaffected.
 
-This `tone` statement can also appear in `espeak-data/config`, in which case
+This `tone` statement can also appear in `espeak-ng-data/config`, in which case
 it applies to all voices which don't have their own `tone` statement.
 
 ### flutter
 
 Eight integer parameters. These are added to the voice's corresponding
 `stressLength` values. They are used in the voice variant files in
-`espeak-data/voices/!v` to give some variety. Negative values may be used.
+`espeak-ng-data/voices/!v` to give some variety. Negative values may be used.
 
 ### stressAmp
 
 
 Used for some languages to detect if additional language data is
 installed. If the size of the compiled dictionary data for the language
-(the file `espeak-data/*_dict`) is less than this size then a
+(the file `espeak-ng-data/*_dict`) is less than this size then a
 warning is given.
 
 ### alphabet2