Migrate and rename a bunch of functions from comp.el to comp-cstr.el

Migrate and rename a bunch of functions from comp.el to comp-cstr.el

	* lisp/emacs-lisp/comp-cstr.el (comp-cstr-imm-vld-p)
	(comp-cstr-imm, comp-cstr-fixnum-p, comp-cstr-symbol-p)
	(comp-cstr-cons-p): Move and rename from 'comp.el'.
	* lisp/emacs-lisp/comp.el (comp-mvar-type-hint-match-p)
	(make-comp-mvar, comp-emit-assume, comp-fwprop-prologue)
	(comp-function-foldable-p, comp-function-call-maybe-fold)
	(comp-fwprop-call, comp-fwprop-insn, comp-call-optim-func)
	(comp-compute-function-type): Update for renamed functions.
	* src/comp.c (emit_mvar_rval): Likewise.
	* test/src/comp-tests.el (comp-tests-mentioned-p-1)
	(comp-tests-cond-rw-checker-val): Likewise.