[win32] replace usage of IsVistaOrHigher and IsWindows8OrHigher with unified function IsWindowsVersionAtLeast
[win32] Remove CSysInfo::IsVistaOrHigher and CSysInfo::IsWindows8OrHigher functions
[settings] - fix fetching the eventserver port as int from xbmchelper - fixes #14329 i guess
Merge pull request #2741 from Karlson2k/win32_sysinfo_clean

Small cleanup for CSysInfo
jni: fix crashes when finding external storage. Regression from jni merge.