Fix android song end detection. _androidPlayer is static but wasn't being correctly treated like it was.

Also fix Duration and Position properties (milliseconds not seconds)
Remove _initialized check from DrawableGameComponent.GraphicsDevice

Initially i put the check there as was implemented by @Aztherion.

I did some testings and found that XNA doesn't enforce any similar test.
After all GraphicsDevice is already initialized by Game. It's logical
that someone might want to do some non-content initialization on the
constractor of DrawableGameComponent based on values from
GraphicsDevice.
Merge remote-tracking branch 'upstream/develop' into nKast_DrawableGameComponent_GraphicsDevice
Merge remote-tracking branch 'upstream/develop' into nKast_DrawableGameComponent_GraphicsDevice
fix for VertexBuffer.GetData<>()

-Argument check now throws exceptions/Messages same as XNA.
-Copy now copies only as many as elementCount items.
-Use of offsetInBytes argument.

I accidentally deleted the branch. Original thread at
https://github.com/mono/MonoGame/pull/2033
--------------

Issue:
https://github.com/mono/MonoGame/issues/1076#issuecomment-24449713

I made some quick testing to see if this behaves as XNA.
https://github.com/mono/MonoGame/issues/2032

Here is the tests I used.
private VertexBuffer _vertexBuffer;
private DynamicVertexBuffer _dynamicVertexBuffer;
VertexPositionColor[] _vertices;

private void SetUpVertexBuffers()
{
//setup
_vertexBuffer = new VertexBuffer(this.Game.GraphicsDevice,
VertexPositionColor.VertexDeclaration, 2, BufferUsage.None);
_dynamicVertexBuffer = new DynamicVertexBuffer(this.Game.GraphicsDevice,
VertexPositionColor.VertexDeclaration, 2, BufferUsage.None);
_vertices = new VertexPositionColor[2];
_vertices[0].Position = new Vector3(11f, 12f, 13f);
_vertices[1].Position = new Vector3(21f, 22f, 23f);
_vertices[0].Color = Color.FromNonPremultiplied(127, 63, 31, 255);
_vertices[1].Color = Color.FromNonPremultiplied(15, 7, 3, 255);
}

private void TestVertexBuffer()
{
VertexPositionColor[] output;
Vector3[] outputvec3;
Vector2[] outputvec2;
float[] outputZ;
Color[] outputColor;
int vertexPCStride = VertexPositionColor.VertexDeclaration.VertexStride;

//copy all
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
output = new VertexPositionColor[2];
_vertexBuffer.GetData(output);
Debug.Assert(output[0].Position == _vertices[0].Position);
Debug.Assert(output[0].Color == _vertices[0].Color);
Debug.Assert(output[1].Position == _vertices[1].Position);
Debug.Assert(output[1].Color == _vertices[1].Color);

//copy only first vertex in first position
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
output = new VertexPositionColor[2];
_vertexBuffer.GetData(output, 0, 1);
Debug.Assert(output[0].Position == _vertices[0].Position);
Debug.Assert(output[0].Color == _vertices[0].Color);
Debug.Assert(output[1].Position == Vector3.Zero);
Debug.Assert(output[1].Color == Color.Transparent);

//copy first vertex in first position
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
output = new VertexPositionColor[1];
_vertexBuffer.GetData(output, 0, 1);
Debug.Assert(output[0].Position == _vertices[0].Position);
Debug.Assert(output[0].Color == _vertices[0].Color);

//copy first vertex in second position
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
output = new VertexPositionColor[2];
_vertexBuffer.GetData(output,1,1);
Debug.Assert(output[0].Position == Vector3.Zero);
Debug.Assert(output[0].Color == Color.Transparent);
Debug.Assert(output[1].Position == _vertices[0].Position);
Debug.Assert(output[1].Color == _vertices[0].Color);

//copy second vertex in first position
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
output = new VertexPositionColor[1];
_vertexBuffer.GetData(vertexPCStride, output, 0, 1, vertexPCStride);
Debug.Assert(output[0].Position == _vertices[1].Position);
Debug.Assert(output[0].Color == _vertices[1].Color);

//copy second vertex in second position
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
output = new VertexPositionColor[2];
_vertexBuffer.GetData(vertexPCStride, output, 1, 1, vertexPCStride);
Debug.Assert(output[0].Position == Vector3.Zero);
Debug.Assert(output[0].Color == Color.Transparent);
Debug.Assert(output[1].Position == _vertices[1].Position);
Debug.Assert(output[1].Color == _vertices[1].Color);

//read positions
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
outputvec3 = new Vector3[2];
_vertexBuffer.GetData(0, outputvec3, 0, 2, vertexPCStride);
Debug.Assert(outputvec3[0] == _vertices[0].Position);
Debug.Assert(outputvec3[1] == _vertices[1].Position);

//read positions 2D
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
outputvec2 = new Vector2[2];
_vertexBuffer.GetData(0, outputvec2, 0, 2, vertexPCStride);
Debug.Assert(outputvec2[0].X == _vertices[0].Position.X);
Debug.Assert(outputvec2[0].Y == _vertices[0].Position.Y);
Debug.Assert(outputvec2[1].X == _vertices[1].Position.X);
Debug.Assert(outputvec2[1].Y == _vertices[1].Position.Y);

//read depth
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
outputZ = new float[2];
_vertexBuffer.GetData(sizeof(float) * 2, outputZ, 0, 2, vertexPCStride);
Debug.Assert(outputZ[0] == _vertices[0].Position.Z);
Debug.Assert(outputZ[1] == _vertices[1].Position.Z);

//read colors
SetUpVertexBuffers();
_vertexBuffer.SetData(_vertices);
outputColor = new Color[2];
_vertexBuffer.GetData(sizeof(float)*3, outputColor, 0, 2,
vertexPCStride);
Debug.Assert(outputColor[0] == _vertices[0].Color);
Debug.Assert(outputColor[1] == _vertices[1].Color);

return;
}
Merge remote-tracking branch 'upstream/develop' into nKast_DrawableGameComponent_GraphicsDevice
Merge remote-tracking branch 'upstream/develop' into tnc_Fix_VertexBuffer_GetData
Make Texture2D.Reload(Stream) public -- again

Someone already did this in a previous commit ( https://github.com/mono/MonoGame/commit/06f6c2fe65201fd3552af1261711af07fbc51cf3 ) but I think it inadvertently got lost in a merge...
I'm not sure why nobody missed it, but my team and I are using this method on Android, to recover from the GraphicsDevice.DeviceReset event. To quote the original commit message:

"The ContentManager class handles texture reloading of all its loaded textures, but if you're using Texture2D.FromStream() to load textures, this change will allow you to reload them without updating their references everywhere."
Implement song end detection for windows.

Stop playing rather than just saying we have, otherwise the media session will not get stopped correctly.
Merge pull request #2060 from danzel/song-end-android

Fix android song end detection
Merge pull request #2059 from danzel/song-end-windows

Implement song end detection for windows
Merge pull request #2094 from yaurthek/reload-patch

Make Texture2D.Reload(Stream) public -- again
Merge pull request #2064 from nkast/nKast_DrawableGameComponent_GraphicsDevice

Remove _initialized check from DrawableGameComponent.GraphicsDevice
Merge pull request #2071 from nkast/tnc_Fix_VertexBuffer_GetData

fix for VertexBuffer.GetData<>()
Merge remote-tracking branch 'upstream/develop' into develop