blobfs: Fix patch. The code to fall back to bk _stat was already there, but still conditioned on the BK_REMAP environment variable. 
blobfs: Fix patch. The code to fall back to bk _stat was already there,
but still conditioned on the BK_REMAP environment variable. 

bk: 4a049f1dZh2F54kz4OQrFf-Gb-k0Gw
bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper