- Move what were '--config=msvc-cl' settings out of .bazelrc into the
  default cflags for Windows compilation. This enables bazel build ...
  and bazel test ... to simply work out of the box.

- Cleans up .bazelrc lists of windows vs. clang-cl settings, dividing
  the list into desired toggles vs. bazel or envoy bug workarounds

- Fix errors in curl library creation in fastbuild on Windows

- Introduce toggles and defaults for alwayslink argument to library objects.
  Defaults remain the same for now.

- Introduce, but do not toggle clang-cl flags (this will arrive in a
  later PR when we resolve the opt build errors missing intrinsic base
  class destructors in the mock classes)

Signed-off-by: Sunjay Bhatia <sunjayb@vmware.com>
Signed-off-by: William A Rowe Jr <wrowe@vmware.com>
Co-authored-by: Sunjay Bhatia <sunjayb@vmware.com>
Co-authored-by: William A Rowe Jr <wrowe@vmware.com>

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Signed-off-by: William A Rowe Jr <wrowe@vmware.com>

Correct flag '--features' typo

Signed-off-by: William A Rowe Jr <wrowe@vmware.com>

- The CMP0091 rule cannot simply be disabled, it breaks any build where
  that rule isn't recognized by the installed cmake.

- Applying a limit of rules applicable to CMake 3.16 breaks corrections made
  to later versions of CMake.

- Using -U0 for the delta of this patch decreases the likelyhood it might not
  apply cleanly to the next iteration of curl.

- This now corrects both windows msvc-cl fastbuild and all clang-cl builds.

- All of this becomes irrelevant once this issue is addressed;
  #11816

Signed-off-by: William A Rowe Jr <wrowe@vmware.com>

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Signed-off-by: William A Rowe Jr <wrowe@vmware.com>

- With the correct CFLAGS handling, the flags are correctly passed from
  bazel while building curl using rules_foreign_cc. This override is no
  longer applicable.

Signed-off-by: William A Rowe Jr <wrowe@vmware.com>

Signed-off-by: William A Rowe Jr <wrowe@vmware.com>

Signed-off-by: William A Rowe Jr <wrowe@vmware.com>

Signed-off-by: William A Rowe Jr <wrowe@vmware.com>

…ld-default

Signed-off-by: William A Rowe Jr <wrowe@vmware.com>