Fixes build failure because assert.h was not included.

Remove the C list_head library and use type-safe C++ instead.

Provide the full API.

Omit a few methods that are not applicable.

This was bugged, because it did not scale the "size".

Replaces g_str_has_suffix().

Replaces g_strstrip().

A file called ".jpg" is not a JPEG file with an empty name; it is
merely a hidden file.

For std::move().

The DynamicFifoBuffer methods never return nullptr when the buffer is
empty or full; instead, they return an empty buffer.  This bug caused
an endless loop.

Switch to the C++ version.

Avoid GLib.

Replaces g_uri_parse_scheme().