Don't log a critical line on startup if statistics.dat is missing (especially on first startup)

git-svn-id: http://amule.googlecode.com/svn/trunk@10812 6ea3b165-b8b8-dda6-0cea-db2f03e7d5ff
Switching to Visual Studio 2013

Keeping the 2010 projects for now (but not the 2012)
Also renaming wx29 to wx30.
There was a weird build error with manifests with some of the projects with wx 2.8, I had to exclude manifests there. Yeah, wx 2.8 starts looking outdated.

git-svn-id: http://amule.googlecode.com/svn/trunk@10813 6ea3b165-b8b8-dda6-0cea-db2f03e7d5ff