Catching up ServiceStack.Logging to 3.9.48

[bchavez]

Previous NuGet linked to 3.9.44, which caused build errors in Mono when ServiceStack.* head version is 3.9.48.

This pull requests catches up the lagging 3.9.44 NuGet packages to 3.9.48.

See this problem on StackOverflow:
http://stackoverflow.com/questions/16784739/new-to-c-mono-servicestack-redis-cannot-find-reference/16843995

I think we need some synchronized releases with _all_ ServiceStack packages; otherwise, we start leaving the Mono people behind.

The problem

Steps to reproduce the problem

• ServiceStack.Logging.NLog is compiled against 3.9.44 on NuGet
• The head version is of ServiceStack.* is 3.9.48.

1. You download NuGet ServiceStack 3.9.48
2. You download NuGet ServiceStack.Logging.NLog which is compiled against 3.9.44

When building using xbuild on Mono will produce the following:

Errors:

/root/tmp/MyProject/Source/MyProject.sln (default targets) ->
(Build target) ->
/root/tmp/MyProject/Source/MyProject.Server/MyProject.Server.csproj (default targets) ->
/usr/lib/mono/4.0/Microsoft.CSharp.targets (CoreCompile target) ->

        Program.cs(47,83): error CS0234: The type or namespace name `NLogger' does not exist in the namespace `ServiceStack.Logging'. Are you missing an assembly reference?

[mythz]

Cool thx Brian.