Fix underflow handling in builtin string to number conversion.
treedc719005e47d9ba923e4e5162caa8281070261f3
-rw-r--r-- 71 .gitignore
-rw-r--r-- 2932 COPYRIGHT
-rw-r--r-- 5668 Makefile
-rw-r--r-- 455 README
drwxr-xr-x - doc
drwxr-xr-x - dynasm
drwxr-xr-x - etc
drwxr-xr-x - src