[req] drop pre-3.7 api on request Dropping of API deprecated since 3.7 decided in #2772958

[session] drop pre-3.7 api on session Dropping of API deprecated since 3.7 decided in #2772958

[transaction] use set operation in the hook control code We use direct operator on set instead of looping by hand, This simplify the codes.

[session/transaction] move hook management in transaction itself This is transaction level code.

[session] allow writable tx_attr and use it for commit_state This keep clarifying the code.

[session/transaction] move add operation in session code

[session/transaction] move entity life utility on transaction This access transaction related data and therefor should live in transaction.

[transaction] small simplification in ecache code A single assignation is simpler.

[session/transaction] move entity cache management on session A new utility method is added for that. It is similar to the one used for attribute access. code is copy pasted as his. Function documentation is added.

[session] have a nice helper function to forward access to session This allows a lighter and clearer code. This will also ease the addition of deprecation warning in the future.

[session] drop dead code session._tx is never None. New transaction are created if necessary.

[session] use tx.data directly in session code.

[transaction] rename transaction_data to data Transaction.transaction_data is redundant. A transaction_data property is left for backward compatibility. Deprecation mechanism will come in later changeset

[session] document Session._tx

[session] split session creation from default session assignation This is the first step for more independence for Transaction.

[session] make session lock reentrant We are going to use it for other session related business. It is renamed from _closed_lock to _lock in the same move.

[session] document set_tx

[session] rename txstore variable to tx This is a more accurate name

[session] rename `_threaddata` to `_tx` The returned object is a Transaction object.

[session] rename self.__threaddata.txdata to self.__threaddata.tx This is Transaction object now.

[session] rename _tx_data into _txs The object inside are now Transaction object. Not TransactionData object.

[transaction] relocate method building transaction context manager It is in the middle of methods going to be refactored.

[transaction] move RQLRewriter in Transaction This remove the last ``AttributeError`` magic. The ``RQLRewriter`` needs a Session. Its reset is handled in ``Session`` code to handle that

[transaction] initialize security control attribute in Transaction There is no reason to not initialize them in __init__ time. This simplify the Session code.

[session] move security constant out of the class There is no reason for it to not be global. This will ease it use by ``Transaction object``.

[transaction] initialize hook control attribute in Transaction There is no reason to not initialize them in __init__ time. this simplify the transaction code.

[session] Move hook control constants out of the class There is no reason for them to not be global. This will ease they use by Transaction object.

[transaction] initialize transaction data and state related attribute. There is not reason to not explicitly declare and initialize attribute in Transaction.__init__. This change requires the introduction of a Transaction.clear() method to get ride of some wicked ``AttributeError`` based logic.

[transaction] handle ``mode`` default value in Transaction The transaction mode is now explicitly passed at creation time and always read from the Transaction object. Note that there is a slight behavior change. The transaction mode is now set at the creation of the transaction. Changes made to the default value have no longer any effect on existing transaction.

[transaction] explicit Transaction cnxset attribute The Transaction object have a lot more attribute that those previously declared in __init__. They are just dynamically assigned in Session code. This changeset explicit the ``cnxset`` and ``mode`` attribute declaration.

[server] rename TransactionData to Transaction Transaction will become a full featured object.

[doc] update Session documentation A major refactoring of Session/Transaction handling is commit. This is a good occasion to improves the documention.

merge 3.16 fix in default

[devtools] fix a couple issues with xvfb-run xvfb-run didn't quite clean up correctly after itself, because: - dash doesn't run EXIT traps on signals - if we don't run the command in the background, a TERM handler doesn't run until the command exits

[devtools/qunit] don't open-code subprocess.Popen.terminate

[devtools/qunit] get rid of unused variable

[server] *init_repository* lookup the database instead of the schema to drop tables (closes #810743) So, tables are dropped even if the schema was changed. :note: if mssql, drop views before tables. :note: because of table dependencies we try a second drop sequence

[book] remove XXX to an old discussion about appengine

[web publish] in case of error, ensure proper http status is set and Content-disposition header is reseted. Closes #2553066

Add CubicWebRequestBase.content (closes #2742453) This is the body of the HTTP request (stream)

add the match_http_method predicate (closes #2559932) This aim at creating views which are selected on other HTTP methods (PUT, DELETE, ...)

[pkg] the previous commit requires new feature in yams.

add a command to compare db schema and file system schema (closes #464991)

drop typed_eid() in favour of int() (closes #2742462) typed_eid was introduced to abstract the eid type when running on Google AppEngine. It is not used anymore and can be removed. Let's use int() instead.

merge with stable

3.15 is the new old stable

[web] don't link to None in author box (when author has been deleted) (closes #2409855)

dbapi: try to restore compatibility of the connect api with 3.15 A few issues here: - urlparse('foo').scheme is '', not None - cnxprops is an optional argument Regression from 62213a34726e ("[db-api/configuration] simplify db-api and configuration so that all the connection information is in the repository url, closes #2521848") Closes #2754322