[m-dev.] for discussion: dropping support for old compilers / OSs etc

[Julien Fischer]

Hi all,

I propose the following:

    1. for the C# backend we require the use of .NET 4.0 or later.
    2. for the Java backend we require the use of Java 1.6 or later.
    3. we drop support for versions of Visual Studio prior to 2013.
    4. we drop support for vresions of clang less than 3.0.
    5. we drop support for versions of Windows before 7.
    6. we drop support for versions of OS X before 10.6.

Julien.