Set Makefiles to g++ release mode
Merged makefile
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Added NDEBUG flags to build
Merge from upstream
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Merge branch 'deriv' of https://github.com/bruceiv/egg into deriv
Fixed that rule_node's contained expression is always gen 0