[repl] support multiple line input
hyper link srfi's pages
add missing link of srfi 17
add missing link of srfi 111
grammar bugfix
[doc] getopt dependency was dropped.
vm_tear_off should happen in cont. saving, not in restoring
lset/lref can access to torn-off regions because of call/cc
Merge branch 'issue-201'
add benz submodule
delete old submodules
remove include headers
initial benz integration
move main.c to src/
managed to make it work
grammer fix
add -l option
Merge pull request #205 from KeenS/main-option

add -l option
Merge pull request #199 from KeenS/srfi-links

Hyper link srfi's pages
update benz