Add jni/libevent submodule
Add libneubot as submodule
add the skeleton
Add configure.sh and moved neubot.i to the folder jni
Sync libneubot with bassosimone/libneubot
Add stl to use C++ code
Now libneubotjava.so can be built succesfully with ndk-build.

In the root folder of the project there must be the file project.properties,
where the Android API version target is declared. Otherwise, ndk-build does not
include a folder containing some header files necessary to the use of libevent.
Edited package destination of generated java files
Point libevent to my personal fork
Merge pull request #1 from alessandro40/devel-java2

Skeleton of Java project plus compiling C/C++ shared library
Sync libneubot with origin