tree 2dea3ba8d23b5cc6c088a364945985f7b046fa75
parent 0df5b39a1e9c8aaf480e3f8667d7967e08bbef2b
author Rich Felker <dalias@aerifal.cx> 1510344402 -0500
committer Rich Felker <dalias@aerifal.cx> 1510344402 -0500

add iconv framework for decoding stateful encodings

assuming pointers obtained from malloc have some nonzero alignment,
repurpose the low bit of iconv_t as an indicator that the descriptor
is a stateless value representing the source and destination character
encodings.