Merge pull request ruslo#207 from elucideye/pr.ios-nocodesign-10-3-ar…

…m64-dep-9-0-device-libcxx-hid-sections

add ios-nocodesign-10-3-arm64-dep-9-0-device-libcxx-hid-sections

Merge pull request ruslo#111 from ruslo/pr.cmake.3.7.1

CMake 3.7.1

Add gcc-4-8-pic toolchain

Update README.md

Update environment for MSVC + Ninja

Update MSVC variables according to Hunter

Add NDEBUG to release flags

Add '--tail' option

Add '--discard' option

Add toolchains: ios-nocodesign-{arm64,armv7}