Patches

These patches make the 2015-era sources build on a modern host toolchain.

TWRP / omni 5.1 (`patches/twrp/`)

Patch	File(s)	Problem fixed
`0001-host-cflags-suppress-stringop-truncation.patch`	`build/core/combo/HOST_linux-x86*.mk`	`-Werror=stringop-truncation` errors with host GCC >= 8
`0002-build-core-fix-ar-absolute-paths.patch`	`build/core/definitions.mk`	host `ar`/absolute path handling in whole-archive extraction breaks with newer binutils; extract to a temp dir instead
`0003-recovery-add-std-gnu++11-for-nullptr-support.patch`	`bootable/recovery/Android.mk`	adds `-std=gnu++11` for `nullptr` under the recovery Clang build
`0004-build-core-combo-remove-icf-safe-for-BFD-ld.patch`	`build/core/combo/TARGET_linux-arm.mk`	`-Wl,--icf=safe` is gold-only; commented out for the BFD linker supplied by the toolchain download
`0005-build-core-tasks-kernel-fix-KERNEL_CONFIG_OVERRIDE-ordering-and-passthrough.patch`	`build/core/tasks/kernel.mk`	applies the additional config before the override, drops the clobbering `oldconfig` after override, and passes the override on the kernel build command line

These target the omni twrp-5.1 manifest sources — they only apply inside the repo workspace, not on a host.