[JIT] Removed special case code for set_i_p_ki and set_p_ki_i opcodes which poked into the guts of FixedIntegerArray PMCs directly, as the guts they poked into aren't the real guts of FIA PMCs anymore, now that they use real PMC attributes.  This fixes three JIT failures on x86 for me; now all tests pass.
[JIT] Removed special case code for set_i_p_ki and set_p_ki_i opcodes which
poked into the guts of FixedIntegerArray PMCs directly, as the guts they poked
into aren't the real guts of FIA PMCs anymore, now that they use real PMC
attributes.  This fixes three JIT failures on x86 for me; now all tests pass.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@37474 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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