update git ignore
Compile Android dependencies.

 - update dependencies versions
 - install all dependencies to <top_src>/libraries/android/<platform>/
qtcreator projects
Add SDL activity.

Add debug capabilities.
Don't use g_XmppClient if CONFIG2_LOBBY is 0
Use snprintf insted of sprintf_s.

There is no sprintf_s in the standard, but there is a snprintf which does the smae thing.
Fix compile for Android