Make Qt::RFC2822Date's doc match up with its implementation

The qdatetime implementation's rfcDateImpl() uses regexes which did
not match its comments; nor did either the regexes or the comments
match what was documented. A review of relevant RFCs suggests we
should revise this in future, probably at Qt 6.

The documentation also only addressed the formats recognized when
parsing a date-time, without indicating how they are serialised or how
dates and times are handled separately.

Added a note to the tests for the read-only formats, to remind the
reader that the RFCs merely recommend recognising these - be
permissive in what you expect and strict in what you deliver.

Change-Id: I0f0bec752e7a50bde98cceceb7e0d11be15c6a6f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

0 files changed, 0 insertions, 0 deletions