Update to SQLite 3.8.6 and serf 1.3.7
Update Scintilla to version 3.5.0
Update ext/Versions.txt.
Update to subversion 1.8.10
Update OpenSSL to 1.0.1i
Check the pointer before accessing it.
Remove unneeded variable assignment.
Check for the library before freeing it.
Remove unneeded variables.
Use `empty()` instead of `size()` where possible.
