Prepare for android builds (#88)

* upgrade ci

* fixup

* update ci script

* Update run.sh

* refactor(time): drop libc time functions

* fix(ffi): use i64 instead off time_t

* fix(ci): install croos

* fix: remove unused dc_check_password

* fix(ffi): enable ssl vendoring by default

* chore: remove unused import

* fix(deps): add vendored flag for reqwest

* chore(ci): use cross fork

* fix: handle invalid  server configurations

Closes #90

* Disable android from circle ci for now

deltachat-ffi/Cargo.toml

@@ -17,3 +17,6 @@ crate-type = ["cdylib", "staticlib"]
 [dependencies]
 deltachat = { path = "../" }
 libc = "0.2"
+
+[features]
+default = ["deltachat/vendored"]