scratch/igc updated (b75d0b6d4d4 -> e627da4d46d)

[Pip Cet]

pipcet pushed a change to branch scratch/igc.

      from  b75d0b6d4d4 Bump nativecomp ABI version
       new  8b47122c3e0 Add new struct for data/bytes with an MPS header
       new  38a49e97475 Add function to init an MPS header for string data
       new  e627da4d46d Give pure string data a header


Summary of changes:
 src/alloc.c | 15 ++++++++++++++-
 src/igc.c   | 16 ++++++++++++++++
 src/lisp.h  | 10 ++++++++++
 3 files changed, 40 insertions(+), 1 deletion(-)