* scripting/source/pyprov/makefile.mk:

(and don't leak memory on exit...)

From cppcheck: Using xxxx.empty() instead of xxxx.size() can be faster.
 xxxx.size() can take linear time but xxxx.empty() is guaranteed to take
 constant time

Passed: make distclean && make && make check

PS: This file isn't compiled. But the list wasn't used anyways so this
should be a safe change.

I believe the original idea was that draw/impress export graphics and so
default output dir is the gallery as you might want to export them in there.

Catch is that we cane export in some many different formats there there
isn't a good fit for the whole collection, so lets just use the same
dir for all apps