eric/M2compiler-V1

作者	SHA1 备注	提交日期
Eric Streit	ea1a294593 v1 sources to src/ (build with gm2 -I src, objects stay at root) plus real-comparison codegen fix (emit D5 before stack juggling, 158/158 tests green)	3 周之前
Eric Streit	1793b83e43 step1: Phase-0 scaffolding — M2c module-skeleton compiler, 4/4 tests green	3 周之前