Added void SetIt(MCVarref *p_it) in exec.h
Updated MCClone/MCClipboardCmd::exec(ep) to exec_ctxt(ctxt)
Updated MCCreate::exec(ep) to exec_ctxt(ctxt)
Updated MCDelete::exec(ep) to exec_ctxt(ctxt)
updated MCFlip::exec(ep) to exec_ctxt(ctxt)
Updated MCGrab::exec(ep) to exec_ctxt(ctxt)
Merge branch 'refactor-syntax_unicode_shims5' into refactor-syntax_unicode_shims

Conflicts:
	engine/src/cmdsc.cpp
[[ RefactorSyntax ]] Checking of ctxt.HasError() after various calls (eval, getobj, etc.) added
MCeerror->add replaced with ctxt . LegacyThrow where needed