TYPO3 Core

The core has multiple places
where country flags are stored.

1. typo3/gfx/flags/ - a set of
non-normalized .gif files created by Robert
back in the days. No reference currently in
the usage

2. t3skin contains png files of a lot more
flags. They are used for selecting a flag
in sys_language records.

3. t3skin also delivers a sprite file with
all png icons. This is used for e.g. the list
view of sys_language records.

So, the core delivers flags (old ones, just a
few, as gif, not inside EXT:core) but they are
not in use since TYPO3 4.4. Also
it does not deliver sprites, however, uses the
sprites (flags-multiple etc) in list view.

t3skin delivers a standard-set which should be
part of EXT:core, included in the right place
from the beginning so no dynamic TCA manipulation
is necessary in ext_tables.php.