Move all leak info functions to android_mallopt.
Bug: 130028357 Test: malloc_hooks unit tests. Test: Enable backtrace for mediaserver, run dumpsys media.player -m Test: Enable backtrace for calendar, run am dumpheap -n <PID> <FILE> Change-Id: I6774e28ccd9b3f2310127a5b39ccd15fe696a787 Merged-In: I6774e28ccd9b3f2310127a5b39ccd15fe696a787 (cherry picked from commit 3aadc5e80a5e2cf6b6760ed90d528709223bb449)
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