Add Android build to CI.

[zoff99]

also include fix for #457

---

This change is 

[zoff99]

solves #340

[iphydf]

This is insanely ugly, but it seems to work, so . We can clean up this CI script later. Please squash your commits into one.

---

Review status: 0 of 2 files reviewed at latest revision, all discussions resolved, some commit checks failed.

---

Comments from Reviewable

[iphydf]

Reviewed 2 of 2 files at r1.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

---

Comments from Reviewable

[zoff99]

can u squash em for me please? i checked that checkbox.

[zoff99]

also are you sure about that: EPOLLRDHUP fix? is that working for all platforms?

[iphydf]

I am not sure about it, but it seems to work, and we'll replace that with libev at some point anyway, so right now I don't care much.

[zoff99]

@iphydf funny that you call it insanely ugly :-) since those are your EXACT commands :-) (from jvm-toxcore-c repo). just not hidden in perl wrappers.
this way i find easier to understand and comprehend

[iphydf]

jvm-toxcore-c scripts are also insanely ugly.

[zoff99]

i am happy they exist