Use a CMake-specific path to this configured header so that it works
when included from a CMake source file in addition to curl sources.
We do not install the Curl headers with CMake, so this hack is okay.
Re-apply the logic change made by commit v2.8.2~536 (Use arch-aware
CHECK_TYPE_SIZE result, 2009-12-17). The size of some types must be
selected at preprocessing time when building for multiple archs on OS X.
Re-apply change from commit v2.8.0~1683 (add initial support for HAIKU
OS, 2008-09-15) on updated upstream curl. However, leave out the part
that was reverted by commit v3.0.0-rc1~541^2~1 (Haiku: Remove outdated
preprocessor checks, 2013-10-05).
We imported curl from an upstream release, so report the corresponding
release version to servers. This is consistent with the version we
presented when our builtin curl was 7.16.1.
Remove our curl CMake build files since upstream now provides some.
After merging the upstream versions we may then port them to build
inside CMake and take code from our old build files as needed.
Brad King