Install bootstrap variant of bionic libs

Bionic libs are moved to the runtime APEX and thus are available via the
path /apex/com.android.runtime/lib[64]. However, for processes that are
started before the APEX is ready, a copy of the bionic libs should be left
under /system/lib[64]. This change ensures that the bootstrap bionic
libs are always installed to the system partition.

Note that, at runtime, the bionic libs in the runtime APEX are
bind-mounted to /system/lib/<libname>.so which essentially hides the
bootstrap bionic libs to the processes after the activation of the
runtime APEX.

Bug: 120266448
Test: m and check that libc, libdl, libm are under
/system/lib[64]

Change-Id: I9d5e8e718aa020c012f312a70ed54652130048dd

target/product/base_system.mk

@@ -118,14 +118,14 @@ PRODUCT_PACKAGES += \
     libaudioutils \
     libbinder \
     libbinder_ndk \
-    libc \
+    libc.bootstrap \
     libcamera2ndk \
     libcamera_client \
     libcameraservice \
     libc_malloc_debug \
     libc_malloc_hooks \
     libcutils \
-    libdl \
+    libdl.bootstrap \
     libdrmframework \
     libdrmframework_jni \
     libEGL \
@@ -145,7 +145,7 @@ PRODUCT_PACKAGES += \
     libjnigraphics \
     libjpeg \
     liblog \
-    libm \
+    libm.bootstrap \
     libmdnssd \
     libmedia \
     libmedia_jni \