Force static VC runtime

[Daniel-Cortez]

What this PR does / why we need it:

This PR adds a new compile option FORCE_STATIC_VCRT (enabled by default) to remove the dependency from MSVCR100.dll by building with static MSVC runtime library (see #411). I borrowed the idea for the name of this option from SDL2, so I believe this name should be common enough.

Which issue(s) this PR fixes:

Fixes #411

What kind of pull this is:

• [ ] A Bug Fix
• [ ] A New Feature
• [ ] Some repository meta (documentation, etc)
• [x] Other

Additional Documentation:

[Y-Less]

That's brilliant timing! I had this issue just yesterday on a new computer.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity.

[Daniel-Cortez]

Removed the "Remove unused duplicate functions from sc1.c" commit, as I'm planning to move it into a separate PR.