Fix the length of a profiler system property

This patch changes the profiler system property
"dalvik.vm.profile.max-stack-depth" to "dalvik.vm.profile.stack-depth"
so that the length of the option is less than PROP_NAME_MAX.

Bug: 17294224

(cherry picked from commit 4d033e1c)

Change-Id: I10dd0b3bfa46b836def437a3822f6c48538167dd