Fix two IRGen tests that are failing on Android armv7 and disable eight ClangImporter, C++ Interop, and SILOptimizer tests, two of which that were already failing on other 32-bit platforms.
This reverts commit 3066bd6919.
This re-lands a change after it got reverted because of a regression in the build of SwiftCompilerSources.
rdar://136838485
This removes a longstanding workaround in the import logic for C++ structs:
Swift assumed that if a C++ struct has no copy constructor that is explicitly deleted, then the struct is copyable. This is not actually correct. This replaces the workaround with a proper check for the presence of a C++ copy constructor.
rdar://136838485
