Add LICENSE.txt and README.md files.

Update Janus/Ada build scripts for src directory.

As sources moved to src directory, adjust Janus/Ada
scripts for the new location. Also, simplify
the scripts a little.

Move testsql.adb to test directory.

Rename the procedure inside sqlite3_libmain.adb.

Move source files to src directory.

Also, rename libmain.adb to sqlite3_libmain.adb.

Update Janus/Ada build scripts.

Explicitly convert '99' to Long_Integer so the code builds with Janus/Ada.

Add Bind for Long_Integer and Unbounded_String.
Also add Error_Message function.

Add a simple Makefile also.

Add project file for gnat.

Move Janus/Ada build scripts into 'janusada' directory.

Add some tests using Ahven.

Add Column procedure for text data.

Add sqlite3 binaries and tweak Janus/Ada build scripts to use those binaries.

Add license headers. (ISC license)

Sqlite3 bindings for Ada.

Work with Janus/Ada and FSF GNAT.