Upgrade to GNU Make 4.3.

Also ran `./bootstrap`.

Also removed -C from MAKE_CFLAGS in maintMakefile because clang doesn't
like that:

  clang-9: error: invalid argument '-C' only allowed with '-E'

Also copied in an updated config.h for soong's glibc build, and a
config.h and glob.h for the darwin build.

Bug: http://b/153310680
Test: checkbuild.py --module make
Change-Id: I9aca8c79279488b2e56820da2ca7f8efa3ed2a06