Test: go soong tests
Test: bp2build generate & sync; mixed build libc; mixed build su (su is
an Android.mk target that relies on converted a cc_library_headers)
Bug: 181552740
Change-Id: I9efd587970551fd41f642a208f0aa0a80e8694e0
OriginalModuleName is a clearer name for what the field represents.
Also document it.
Follow-up from aosp/1675466.
Test: TH
Change-Id: Ie1152b5ae63f388164582be70e193a91ef96c89c