foam: Added SIntHashCombine operation.. this will enable us to change
the way hashes are calculated.
abcheck.c: Add a header file
comsg.h: Another header file
aldor/test/Makefile.in: Support make DBG=...
foam: Replace macro with function call.. may consider re-inlining it later,
just easier to do this way.
showexports: Add support for categories - for categories this will show name,
existence of default and type of exports.
test_tinfer.c: whitespace fixes.
Replace use of fprintf with afprintf