cgo: always include the current workdir via iquote (#2236)
cgo: always include the current workdir via iquote (#2236)

Bazel does this, so that headers can be imported via their fully
qualified path.

Signed-off-by: Steeve Morin <270a9e62421daabb9a3c3e5a87c32543e9341ce1@zen.ly>
bazelbuild/rules_go,bazelbuild/rules_go,bazelbuild/rules_go,bazelbuild/rules_go,bazelbuild/rules_go