* Metadata updates for release 8.9.11

* Update to Release Notes as it was containg many other country codes

* Metadata updates for release 8.9.0

* release notes formatting fix

* Metadata updates for release 8.5.1

* Update release_notes.txt

* Metadata updates for release 8.5.0

* Corrected release notes as US geocding update is mentioned as new addition.

Alternate metadata and test metadata for C++ was regenerated not due to changes in this commit, but due to PR #1726 and that they should have been updated then.

* Metadata updates for release 8.4.1

* Update release_notes.txt

Update doc references to refer to CLDR and the page of CLDR codes where
appropriate - it used to say ISO country codes were used, but they aren't.

Also updated to refer to two *or three* letter language codes since they may be three letters (we use the shortest defined one for a language)

Updating comments about leadingDigits field at territory level as well.

- make them more consistent with each other
- explain why the empty string is sometimes returned when geocoding

* Metadata updates for release 8.2.0

* Update release_notes.txt

* Support semicolon as extension character while parsing

* Add notes to pending_code_changes.txt

* JS port: Support semicolon as extension character while parsing

* Update comments in phonenumberutil.js

This excludes editing the proto file itself, or the auto-generated or hand-crafted fields that are derived from it.

Metadata changes:
-- Drops the "-1" that was erroneously included in possible lengths before (didn't break anything, but was wrong) - it was a possibleLength of a sub-component so got added to the generalDesc possibleLengths
-- possibleNumberPattern no longer inherited: we don't use this anyway, we will do another CL soon to stop including it at all in the generated metadata
-- exampleNumber is no longer set on fixed-line and mobile elements from the generalDesc

XML file changes:
-- Stopped specifying "NA" and "-1" specifically for fixed-line and mobile blocks; now they are treated as every other type of phone number: if missing, don't fill them in from generalDesc, but leave them missing.

Code changes:
-- Stop using the exampleNumber on generalDesc for non-geo entities, but look at their phonenumber descs - the exampleNumber won't be stored on the generalDesc anymore. This affects porters if they either copied our build logic or used our built metadata in some way; they should update this method in their port too.

Changing PhoneNumberUtil to use the possibleLengths information, not the reg-exes.

Note the API is not changing, but the metadata is now somewhat stricter for
many countries, since before we applied only a minimum and maximum length for
most countries, and now we specify exactly which lengths are possible.

This has a flow-on effect when parsing, since we decide whether to do certain
operations like strip a national prefix based on whether the number is a
possible length before/after - when parsing, if the number is shorter than the *national* pattern, we no longer strip the national prefix.

Affected countries:
AD (7 digits now invalid)
AM (7 digits now invalid)
AR (9 digits now invalid)
AZ (8 digits now invalid)
BG (4 digits now valid for local-only numbers)
BJ (5-7 digits now invalid)
CC/CX (5 digit numbers now possible: this should always have been the case, but the generalDesc was wrong and didn't reflect its child elements. We now calculate it based on them, which allows 5 digit numbers.)
CO (9 digits now invalid)
CR (9 digits now invalid)
ET (8 digits now invalid)
GE (7 and 8 digits now invalid)
GH (8 digits now invalid)
IL (5 and 6 digits now invalid)
IM/JE/GG (7, 8 and 9 digits now invalid, shortest national number length now 10, so parsing affected for numbers shorter than this)
IS (8 digits now invalid)
KG (7,8 digits now invalid)
KR (11 digits now invalid)
LA (7 digits now invalid)
LI (8 digits now invalid)
LY (8 digits now invalid)
MV (8 and 9 digits now invalid)
MW (8 digits now invalid)
MX (9 digits now invalid)
NP (9 digits now invalid)
SE (11 digits now invalid)
SG (9 digits now invalid)
SL (7 digits now invalid)
SM (7-9 digits now invalid)
UA (8 digits now invalid)
UG (8 digits now invalid)
UZ (8 digits now invalid)

- LOGGER -> logger
- Small comment fixes
- Style-guide-recommended formatting changes
- Removal of duplicate, unneeded method in PhoneNumberToTimeZonesMapper.java for canBeGeocoded, using phoneNumberUtil instead.

Sep 19, 2016: libphonenumber-7.7.0

Code changes:

Removed the dependency on protobuf (protobuf-javanano) from the Java library, resurrecting java/libphonenumber/src/com/google/i18n/phonenumbers/Phonemetadata.java which was present until libphonenumber-7.1.1.

Does not affect the C++ or JavaScript libraries.