Rename mainline_system to generic_system in mk files
to avoid confusion with mainline module.
First, move mainline_system(.*).mk to generic_system(.*).mk
and make previous mainline_system(.*).mk to just inherit
generic_system(.*).mk to make alias except mainline_system.mk.
is just symlink to generic_system.mk.
These aliasing file will be kept remain during migration
for preventing build breakage and making changes possible
during migration.
Bug: 160649682
Test: lunch generic_system_arm64 && m nothing
Test: lunch generic_system_x86 && m nothing
Test: lunch generic_system_x86_64 && m nothing
Test: lunch generic_system_x86_arm && m nothing
Test: lunch mainline_system_arm64 && m nothing
Test: lunch mainline_system_x86 && m nothing
Test: lunch mainline_system_x86_64 && m nothing
Test: lunch mainline_system_x86_arm && m nothing
Change-Id: I3609ec2d91b0f08859a36cac75c25876b1db6d6a
The vendor path check is incompatible with the current setup of prebuilt
module stubs.
Bug: 160165426
Test: lunch mainline_system_x86 ; m nothing
Change-Id: I5aa809dc3e0c9b36e6963585bb60fd446a234022
Remove redundant TARGET_FLATTEN_APEX lines from mainline board configs.
Remove redundant "inherit updatable_apex.mk" lines from
mainline_system_$arch makefiles.
mainline_system.mk now always install APEX into /system partition.
Products who need flattened APEXes would have their flattened APEXes
installed into /system_ext.
Test: Build mainline_system_arm64 and validate noop
Change-Id: I9ee4af529a4bd554cb8707cfc260d6b912fd5fff
