Restructure more to allow tiers.

common/tier1c_forth.fs

@@ -0,0 +1,29 @@
+\ Copyright 2022 Bradley D. Nelson
+\
+\ Licensed under the Apache License, Version 2.0 (the "License");
+\ you may not use this file except in compliance with the License.
+\ You may obtain a copy of the License at
+\
+\     http://www.apache.org/licenses/LICENSE-2.0
+\
+\ Unless required by applicable law or agreed to in writing, software
+\ distributed under the License is distributed on an "AS IS" BASIS,
+\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+\ See the License for the specific language governing permissions and
+\ limitations under the License.
+
+( Add more words that are usually in extra_opcodes.h )
+
+: fsqrt ( r -- r ) 1e 20 0 do fover fover f/ f+ 0.5e f* loop fnip ;
+
+3.14159265359e fconstant pi
+
+( Transfer internals that are extra opcodes )
+internals definitions
+transfer{
+  'heap 'context 'latestxt 'notfound
+  'heap-start 'heap-size 'stack-cells
+  'boot 'boot-size 'tib
+  'argc 'argv 'runner fill32
+}transfer
+forth definitions