... and add a generic explanation for them instead. Each example file
should contain its own description these days.

Refer to _HEADERDATA not _WRITEDATA.

Reported-by: Michał Piechowski

pop3-multi.c:96:5: warning: implicit declaration of function 'memset'
imap-multi.c:96:5: warning: implicit declaration of function 'memset'
http2-download.c:226:5: warning: implicit declaration of function 'memset'
http2-upload.c:290:5: warning: implicit declaration of function 'memset'
http2-upload.c:290:5: warning: implicit declaration of function 'memset'

Moved some ideas from "next major" to just ordinary ideas since we can
always add new things while keeping the old without doing a "next
major".

Add error-checking to 'cd' in a few cases where omitting the checks
might result in an infinite loop.

Closes #535

Closes https://github.com/bagder/curl/pull/533

... if there are more than one using the same name

...following commit aba281e7 to fix test 1119.

... it is just weird to include by default even if it still works.

Closes #425

... as the certificate is strictly speaking not private.

Reported-by: John Levon

Out of date and not kept accurate. It was sort of a problem of the past
anyway.

This allows FTP transfers with growing (or shrinking) files without
causing a transfer error.

Closes #480

... and add a little example of what the weight actually means. "Relative
proportion of bandwidth".

CURLOPT_STREAM_DEPENDS

CURLOPT_STREAM_DEPENDS_E

CURLOPT_STREAM_PRIORITY

closes #496

Closes #479

Closes https://github.com/bagder/curl/pull/471

Closes https://github.com/bagder/curl/pull/459

... even for those that don't support providing anything in the
'internals' struct member since it offers a convenient way for
applications to figure this out.