Hi,
I have modified solution for Visual Studio.

List of changes:
1.Solution splitted into four projects. This simplifies rebuilding of mmex code and isolates software from different vendors (sqlite3, wxSQLite3, UnitTest++, etc).
2.UnitTest++ open-source unit tesing framework has added.
3. mmex_tests project has added. Write and add to this project your tests for newly added or existing functions.
4.Compiler's warning level increased to maximum (W4). A lot of code have refactored to remove warnings.

These changes affect only Windows build and should not break build on others platforms. UnitTest++ integrated only in Windows build. I will modify build scripts for Unix plaftorm later.

These changes have already committed into revision 420.