Add win32 Configure test whether MSVC truncates 64-bit enums (v9.16)
Microsoft Visual Studio in versions earlier than Visual Studio 2019 version 16.1 silently truncates 64-bit enums to 32-bit. This commit adds a test to win32 Configure script, so we refuse to compile BIND 9 with a broken compiler.
Closes #2555 (closed)
Edited by Ondřej Surý