[patch/rebase] Add a rebase database to keep track of DLL addresses

[Charles Wilson]

Ok, here's round 2. I've omitted rebase-dump-related changes for now,
other than moving the db typedefs to rebase-db.[h,c] (*).

(*) There's a .c because we probably need to have IMG_INFO_MAGIC and
IMG_INFO_VERSION tightly coupled with rebase-db.h.  So, since I already
had the .c, I also moved the *_cmp() functions to rebase-db.[h,c].  It's
possible load_image_info, save_image_info, and print_image_info could
also be moved, but I think the needs of rebase.exe and rebase-dump.exe
are different enough that I didn't bother right now.


	build-aux/config.guess: Add msys support.
	build-aux/config.sub: Add msys support.

(Once again, whether to include these ^^^ changes, and fork config.*, is
up to Jason).

	configure.ac: Specify -static-* and -D overrides, on a
	platform-sensitive basis, here rather than hardcoding in
	Makefile.in. Add strtoll.c to LIBOBJS for MSYS.
	imagehelper/Makefile.in: Instead of hardcoding -static-* and -D
	overrides here, use new platform-sensitive vars defined by
	configure.
	Makefile.in: Ditto.  Also, add strtoll.c.
	imagehelper/rebase_main.cc:  Fix bug in GetImageInfos64 call.
	Be explicit about CYGWIN vs MSYS.
	imagehelper/sections.h: Fix portability issues with stdint.h
	and uintptr_t.
	rebase.c: Handle missing inttypes.h on MSYS. Be explicit about
	CYGWIN vs MSYS. Move db typedefs and comparison functions to
	rebase-db.[c,h]. Use standard GPLv2+ text.
	(strtoull) [MSYS]: Declare missing function.
	(main) [MSYS]: Allow room for msys-1.0.dll, as with cygwin1.dll.
        (mkstemp) [MINGW]: Fix open flags.
	(load_image_info): Fix open flags (O_BINARY). Validate read()
	return value against requested number of bytes.
	(merge_image_info) [MSYS]: Skip msys-1.0.dll, as with
	cygwin1.dll.
	(parse_args) [MINGW]: Use program path to determine location of
	database.
	rebaseall.in: Add platform-specific code to handle msys
	shortcomings. Use standard GPLv2+ text.
	peflagsall.in: Ditto.
	peflags.c: Use standard GPLv2+ text.

	rebase-db.h: New file.
	rebase-db.c: New file.
	strtoll.c: New file.

--
Chuck
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