Add private replacements for deprecated functions such as
g_mutex_new(), g_mutex_free(), g_cond_new() etc., mostly
to avoid the deprecation warnings. We can't change most of
these in 0.10 because they're part of our API and ABI.
Suppress deprecation warnings in selected files, mostly for
g_static_rec_mutex_*. StaticRecMutex is part of our API/ABI,
not much we can do here in 0.10.
