Libcore: Allow "os.arch" system property to be changed

In a native bridge environment, it is necessary to change the "os.arch"
system property to reflect the emulated architecture.

(cherry picked from commit a1bb82d0c77c4f0f1c7807caac2a4e526ffe4240)

Bug: 17671501

Change-Id: Iefdaa84d1804b0d0b170eded36ebe7c24111c13c
Signed-off-by: jgu21 <jinghui.gu@intel.com>
1 file changed