oRevert "Zygote: Restrict slave mountspace so Dalvik apps can mount system-wide volumes"

This reverts commit b5aca1a8e233e68648c9cbea40e82ade151c3f94.
Revert "Remove dvmFindInterfaceMethodInCache2."

This reverts commit 131d8123143375890c766caf070d297ca8b7b463.