msvc-14.16-x64_unity_xtra warnings for Arx in branch master

• C4324 (2 | =)
• C4459 (3 | =)
• C4703 (3 | =)
• C4701 (7 | =)
• C4996 (7 | =)
• C4201 (10 | =)
• C4456 (56 | =)
• C4244 (94 | -21)
• C4267 (293 | =)
• C4127 (404 | =)