[contrib/lua] typo: s/djkson/dkjson/g
[contrib/lua] added dumpTable, switchpinger, peerstats, other admin calls
[contrib/lua] Authenticate memory usage request
[contrib/lua] Guard pingNode test requests
Conditionally enable SSP

GCC has SSP built-in and will still get it enabled as before.
uClibc provides SSP via libssp, but only if it was compiled
with SSP support, i.e. if SSP_SUPPORT=y is passed to ./do.
Log if the ssp is disabled
Merge branch 'lua-fixes' of https://github.com/lgierth/cjdns into crashey