This BSD call will have to be implemented on windows. Right now
we have a stub that just exits the process.

NEWS:
* Switching endianness mid-byte no longer potentially re-reads bytes.
* bit_offset now consistently refers to the number of bits already
  read.
* HParsedTokens now have a bit_length field; this is a size_t.  This
  may be removed for memory reasons.

The bit writer has not yet been updated to match; the result of
switching bit writer endianness in the middle of a byte remains
undefined.

NetBSD's character class test macros are defined such that they produce
a compiler warning when given a char argument. Adding a cast to the call
fixes this.

Specify warning for internal only headers that are now installed for use
by extensions.

h_sequence need PB_MIN set.

Conflicts:
	src/bindings/python/SConscript
	src/bindings/python/hammer_tests.py

h_sequence need PB_MIN set.

Conflicts:
	src/bindings/python/SConscript
	src/bindings/python/hammer_tests.py

effects throughout, including use of inttypes.h/PRI[ud]64 because printf() is
still stuck in a long world, conversion of %lu to %zu for printing values of
type size_t, and changing/renaming the g_check_cmp* family of functions.

Refactored all of the desugaring code to no longer depend on memory being initialized to 0. Everything is about 12% faster now.