julia

dbf0507d - Start replacing Base's _reinterpret with our implementation.

Start replacing Base's _reinterpret with our implementation. Perf improvement on Base.padding (and Base.packedsize): while-loop implementation of base.padding. Makes `padding()` about 4x faster: ``` julia> @btime Base.padding($(type1(30))); 34.125 μs (1175 allocations: 119.58 KiB) julia> @btime Base.padding($(type1(30))); 8.070 μs (170 allocations: 10.72 KiB) ```