The internal buffer should not be used blindly when reading
Frame::HEADER_SIZE, as it is error prone and adds nothing over reading
on the stack (and it's only 7 bytes). There are places in this class
where buffer.clear() is called.
amqp_<filename> is used in at least two other C/C++ projects related
to amqp, so this commit changes all our source to use a qamqp header.
This avoids potential clashes, and is more in line with Qt style
Adam Majer
Matt Broadstone