[SDPA] add methods to sdpawrap.cpp

[odow]

I don't really understand what I'm doing, but this looks correct to me.

x-ref jump-dev/SDPA.jl#49

cc @blegat

[odow]

I don't understand the compilation failures with the (g|s)etDisplay methods: https://buildkite.com/julialang/yggdrasil/builds/2415#01879757-da46-48be-95fa-15f9f98e69ec

error: invalid use of incomplete type ‘struct _IO_FILE’

Do we need to handle FILE* arguments differently somewhere? The headers for the methods are:

void setDisplay(FILE* Display  = stdout);
FILE* getDisplay();

[giordano]

I don't have much time to look into this, but https://www.openwall.com/lists/musl/2021/10/06/4 is likely relevant.

[odow]

@blegat do you want to take a look at this?

[blegat]

Maybe we can merge with getDisplay/setDisplay for now ?

[ViralBShah]

Should we merge?

[blegat]

No objection from me