Default softPermutationId to 0.

This fixes soft rebinding for permutation 0, where previously
module.__softPermutationId would become undefined (because permutation
0's strong name does not have a :0 suffix).

This resulted in the runtime "switch (permutationId)" logic always
picking the default binding (which may/may not be the one for
permutation 0).

Bug: issue 8575
Change-Id: I19a6f9650f5414d98905c0e45cd3a78628b05dd2
(cherry picked from commit 4ed8dc9750b1b241bb41fcf0974ab3a35aa41168)
1 file changed