Make it easy to switch between scudo and jemalloc.

Refactor some of the definitions to separate out all of the native
allocator pieces into one place that can be changed easily. This
should fix a few static libraries that appear to have accidentally
included jemalloc wrapper functions. For example, I verified that
libc_nomalloc.a no longer has references to any je_XXX functions.

Modify the bionic_libc_platform_headers to not include any libraries.
If this isn't updated, soong thinks there are cycles when used by
libscudo.

To enable scudo, change the libc_native_allocator_defaults defaults
from libc_jemalloc5_defaults to libc_scudo_defaults and comment out
the defaults: ["libc_scudo_wrapper_defaults"], line for the shared
library libc_scudo.

To do a final switch to scudo, it will be necessary to clean up
some code in other parts of the tree, but this allows a single cl
to enable or disable.

Bug: 137795072

Test: Builds with jemalloc or scudo with a small change.
Test: Ran bionic unit tests.
Change-Id: I07bb5432a0d2b2f405f92412e8d04fb9c9e51b31
Merged-In: I07bb5432a0d2b2f405f92412e8d04fb9c9e51b31
(cherry picked from commit ccff1b19effcecf1a0601448340d15abe71d411b)

0 files changed, 0 insertions, 0 deletions