Once we add ARM (#16) and PowerPC64 (#7) architecture support, cross-compilation support should be added to the SDK. The SDK needs to separate the fully featured runtime from an embeddable runtime that has only a single architecture and minimal features. This could potentially be accomplished either by statically compiling the cross-compiling runtime into `innative-cmd`, but this limits how people might utilize the library. What will likely happen is that a third "Release Embed" option will be added with a `-e` extension, so a minimal `innative-e.dll` will be available for embedding into programs, versus the more heavy duty cross-compilation runtime. Cross-compilation should add `ENV_STATIC_LIBRARY` to compile static library files, since it will now be possible to compile to arbitrary CPUs.