Similar to #1428 for ecrecover. The current version (storing everything in context=0) should be safe, but it doesn't hurt to change to the current context and that way it's consistent across all precompiles.
Also rename SEGMENT_KERNEL_BN_PAIRING to SEGMENT_BN_PAIRING since it's already using the current context.
Similar to #1428 for ecrecover. The current version (storing everything in context=0) should be safe, but it doesn't hurt to change to the current context and that way it's consistent across all precompiles. Also rename
SEGMENT_KERNEL_BN_PAIRING
toSEGMENT_BN_PAIRING
since it's already using the current context.