Adapt to the change in the main repo.
mallinfo is meant to be API compatible with Linux,
where it's provided by malloc.h.
(I think the API actually originated with System V. I don't
remember how it was there though. Anyway, I guess the
compatibility with Linux is more important than System V
these days.)
This commit changes only ones with the default 2048 and
leaves the others.
E.g. this leaves SYSTEM_RAMTEST_STACKSIZE, whose default is 1024.
I guess those need to be inspected one-by-one.
Make stacksize as well as program name and priority configurable. The defaults are the same as the previous hardcoded values.
The default stacksize of 2048 bytes is more than enough for most target applications. However, when running on the simulator, much large stack sizes are needed.
