readme: The minimum Windows version that libc++ runs on is Windows 7

It uses TryAcquireSRWLockExclusive which didn't exist until Windows 7,
unlike the rest of the SRWLock APIs that appeared in Vista.
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Martin Storsjö committed 2019-10-28 13:49:24 +02:00
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@@ -96,7 +96,7 @@ normal GCC/binutils based MinGW.
until Windows Vista. This has no effect on code not using thread local until Windows Vista. This has no effect on code not using thread local
variables. variables.
- The runtime libraries libunwind, libcxxabi and libcxx also assume that the - The runtime libraries libunwind, libcxxabi and libcxx also assume that the
target is Vista or newer. target is Windows 7 or newer.
- Address Sanitizer doesn't produce working backtraces for i686. Address - Address Sanitizer doesn't produce working backtraces for i686. Address
Sanitizer requires using a PDB file for symbolizing the error location and Sanitizer requires using a PDB file for symbolizing the error location and
backtraces. backtraces.