Sqlite: Add missing includes.

Change-Id: I5f458f297c8bb1b4cd33655ffe30129c04f6b562
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/libs/sqlite/sqlitedatabaseconnection.cpp

@@ -38,6 +38,8 @@
 #include <QDebug>
 
 #ifdef Q_OS_LINUX
+#include <cerrno>
+#include <cstring>
 #include <sys/resource.h>
 #include <sys/syscall.h>
 #include <sys/types.h>