Merge pull request #63 from mehlis/master

fix missing includes
initial ccn commit
add ccnx code
add cnn and ccnd in Makefiles
build ccn dir (not working yet)
move c files to ccn base dir
remove useless files
add all h in ccnd
add new main / remove old one
removed dead include
add missing lib for ssl
sort includes
add ccnr
add external export
more ccnc, ccnd and ccnr to new home
remove testing code, it gets added in prjects
rename ccnr main function
fix autoinit Makefile

now matches new fs layout of ccn
add compatibiliy layer for ccn

This commt add a compatibily layer for the original ccn
code. It tries to use as much code from ccn AND riot.
resort code