follow-up to 811a693b

This should fix the "warning: 'curl_strequal' redeclared without
dllimport attribute: previous dllimport ignored" message and subsequent
link error on Windows because of the missing CURL_EXTERN on the
prototype.

Follow-up to 811a693b

This is a followup to commit 811a693b

Fix compile break from 811a693b

The internal version strcasecompare isn't available outside libcurl

follow-up to 4f8d0b6f. Since the darwinssl code breaks
otherwise. If you build without darwinssl 10.5 works fine.

as that is still part of the API, fix from 8fe4bd08

Fix bug from 811a693b

Mistake brought by 9c91ec77

These two public functions have been mentioned as deprecated since a
very long time but since they are still part of the API and ABI we need
to keep them around.

some more follow-ups to 811a693b

follow-up to 811a693b

... that will ignore lines that are too long to fit in the buffer.

CVE-2016-8615

Bug: https://curl.haxx.se/docs/adv_20161102A.html
Reported-by: Cure53

We had some confusions on when each function was used. We should not act
differently on different locales anyway.

... to make it less likely that we forget that the function actually
does case insentive compares. Also replaced several invokes of the
function with a plain strcmp when case sensitivity is not an issue (like
comparing with "-").

... otherwise example.com/PATH and example.com/path would be assumed to
be the same and they usually aren't!

CVE-2016-8616

Bug: https://curl.haxx.se/docs/adv_20161102B.html
Reported-by: Cure53

CVE-2016-8617

Bug: https://curl.haxx.se/docs/adv_20161102C.html
Reported-by: Cure53

If the requested size is zero, bail out with error instead of doing a
realloc() that would cause a double-free: realloc(0) acts as a free()
and then there's a second free in the cleanup path.

CVE-2016-8619

Bug: https://curl.haxx.se/docs/adv_20161102E.html
Reported-by: Cure53

On 32bit systems we could otherwise wrap around after 2GB and allocate 0
bytes and crash.

CVE-2016-8618

Bug: https://curl.haxx.se/docs/adv_20161102D.html
Reported-by: Cure53

... which previously would lead to out of boundary reads.

Reported-by: Luật Nguyễn

CVE-2016-8620

Bug: https://curl.haxx.se/docs/adv_20161102F.html
Reported-by: Luật Nguyễn

... and don't read outside of the given buffer!

CVE-2016-8621

bug: https://curl.haxx.se/docs/adv_20161102G.html
Reported-by: Luật Nguyễn

Since the internal Curl_urldecode() function has a better API.

CVE-2016-8622

Bug: https://curl.haxx.se/docs/adv_20161102H.html
Reported-by: Cure53

Previously it only held references to them, which was reckless as the
thread lock was released so the cookies could get modified by other
handles that share the same cookie jar over the share interface.

CVE-2016-8623

Bug: https://curl.haxx.se/docs/adv_20161102I.html
Reported-by: Cure53

CVE-2016-8625

Bug: https://curl.haxx.se/docs/adv_20161102K.html
Reported-by: Christian Heimes

'http://example.com#@127.0.0.1/x.txt' equals a request to example.com
for the '/' document with the rest of the URL being a fragment.

CVE-2016-8624

Bug: https://curl.haxx.se/docs/adv_20161102J.html
Reported-by: Fernando Muñoz

- Wrap more words with underscores in backticks.

Follow-up to 13f49133.

words with underscore need to be within `these`

Bug: https://github.com/curl/curl-www/issues/19
Reported-by : Jay Satiro

- Change initial message box to mention delay when downloading/parsing.

Since there is no progress meter it was somewhat unexpected that after
choosing a filename nothing appears to happen, when actually the cert
data is in the process of being downloaded and parsed.

- Warn if OpenSSL is not present.

- Use a UTF-8 stream to make the ca-bundle data.

- Save the UTF-8 ca-bundle stream as binary so that no BOM is added.

---

This is a follow-up to d2c6d156 which switched mk-ca-bundle.vbs output to
ANSI due to corrupt UTF-8 output, now fixed.

This change completes making the default certificate bundle output of
mk-ca-bundle.vbs as close as possible to that of mk-ca-bundle.pl, which
should make it easier to review any difference between their output.

Ref: https://github.com/curl/curl/pull/1012

To make it render better on the web site, at the price of it becoming
slightly less readable as text.