Refactor sanitized library on-disk layout - Soong.

This CL moves the location of ASAN-ified libraries on disk in the
following manner:
/data/lib* --> /data/asan/system/lib*
/data/vendor/* --> /data/asan/vendor/*

There are a couple of advantages to this, including better isolation
from other components, and more transparent linker renaming and
SELinux policies.

Bug: 36574794
Bug: 36674745
Test: m -j40 && SANITIZE_TARGET="address" m -j40 and the device
boots. All sanitized libraries are correctly located in /data/asan/*.

Change-Id: I06bf459260ec451d4495a02562f640ad622f34c2

cc/library.go

@@ -349,8 +349,8 @@ func (library *libraryDecorator) getLibName(ctx ModuleContext) string {
 
 func (library *libraryDecorator) linkerInit(ctx BaseModuleContext) {
 	location := InstallInSystem
-	if library.sanitize.inData() {
-		location = InstallInData
+	if library.sanitize.inSanitizerDir() {
+		location = InstallInSanitizerDir
 	}
 	library.baseInstaller.location = location