Test: build update_engine_sideload
Change-Id: Ia467e39133c2e872297d8b5923eb9d7bf95d2387

Required to be used in unbundled apps.

Bug: 112696623
Test: builds
Change-Id: Ief36e9b951f8d24e7d8b52f06dfbd275e1cdc15b

See build/soong/README.md for more information.

Test: mmma external/brotli
Change-Id: I224bcb29780dade2c048c59f77cf74b9036dd088

libdl is part of system_shared_libs now. -ldl -lpthread -lm are now defaults
for host_ldlibs on Linux and Darwin. -lrt is a default for host_ldlibs on
Linux.

Test: m host
Change-Id: I19474b84d4afa1b678cd4116a3352fcf3cca9e84
Exempt-From-Owner-Approval: build system cleanup

Bug: 34220646
Test: Generate the executable for both host and device.
Change-Id: I8173694f4a6613c2e24806bf28793d3615851d67

Bug: N/A
Test: builds, "bro" works.
Change-Id: If01f33627880dd7393311a91cc94b4c6f0009966