- Update VS project templates to use the OpenSSL lib names and include
  directories for OpenSSL 1.1.x.

This change means the VS project files will now build only with OpenSSL
1.1.x when an OpenSSL configuration is chosen. Prior to this change the
project files built only with OpenSSL 1.0.x (end-of-life) when an
OpenSSL configuration was chosen.

The template changes in this commit were made by script:

libeay32.lib => libcrypto.lib
ssleay32.lib => libssl.lib
..\..\..\..\..\openssl\inc32 => ..\..\..\..\..\openssl\include

And since the output directory now contains the includes it's prepended:
..\..\..\..\..\openssl\build\Win{32,64}\VC{6..15}\{DLL,LIB}
{Debug,Release}\include

- Change build-openssl.bat to copy the build's include directory to the
  output directory (as seen above).

Each build has its own opensslconf.h which is different so we can't just
include the source include directory any longer.

Note the include directory in the output directory is a full copy from
the build so technically we don't need to include the OpenSSL source
include directory in the template. However, I left it last in case the
user made a custom OpenSSL build using the old method which would put
opensslconf in the OpenSSL source include directory.

- Change build-openssl.bat to use a temporary install directory that is
  different from the temporary build directory.

For OpenSSL 1.1.x the temporary paths must be separate not a descendant
of the other, otherwise pdb files will be lost between builds.

Ref: https://curl.se/mail/lib-2018-10/0049.html
Ref: https://gist.github.com/jay/125191c35bbeb894444eff827651f755
Ref; https://github.com/openssl/openssl/issues/10005

Fixes https://github.com/curl/curl/issues/984
Closes https://github.com/curl/curl/pull/6675

Windows project configurations that use OpenSSL with USE_WIN32_CRYPTO
need crypt32.

Follow-up to 148534d which added CURLSSLOPT_NATIVE_CA for 7.71.0.

The changes that are in this commit were made by script.

Ref: https://gist.github.com/jay/a1861b50ecce2b32931237180f856e28

Closes https://github.com/curl/curl/pull/5516

Closes #854

After squashing most of our compiler warnings, up'ed the default
warning level from 3 to 4 in order to increase the likelyhood of
catching future warnings.

find . -name .gitignore -print0 | xargs -i -0 sort -o '{}' '{}'

This wasn't possible with the old curlsrc project filenames, but like
commit 2a615a2b64 and 11397eb6dd for libcurl use the built in Visual
Studio macros for the output filenames.

Following commit 957fcd9049 and in preparation for adding the VC14
project files renamed the curl source project files.

Visual Studio 2005 and above defaults to disabling the startup banner
for the Compiler, Linker and MIDL tools (with /NOLOGO). As such there
is no need to explicitly set the SuppressStartupBanner directive, as
this is a leftover from the VC7 and VC7.1 projects being upgraded to
VC8 and above.

Defined the DEBUGBUILD pre-processor variable to allow extra logging,
which is particularly useful in debug builds, as we use this and Visual
Studio typically uses _DEBUG.

We could define DEBUBBUILD, in curl_setup.h, when _MSC_VER and _DEBUG is
defined but that would also affect the makefile based builds which we
probably don't want to do.