Made "make distcheck" work.

	* Makefile.am: Added platformcode.
	* Makefile.in: Regenerated.
	* configure: Regenerated.
	* configure.ac: Added platformcode.
	* src/2dfir/Makefile.in: Regenerated.
	* src/blowfish/COPYRIGHT: Made non-executable.
	* src/blowfish/LICENSE: Made non-executable.
	* src/blowfish/Makefile.am: Added EXTRA_DIST files.
	* src/blowfish/Makefile.in: Regenerated.
	* src/common.mk.am: Updated
	* src/common.mk.in: Regenerated.
	* src/crc32/Makefile.am: Added EXTRA_DIST files.
	* src/crc32/Makefile.in: Regenerated.
	* src/cubic/LICENSE: Made non-executable.
	* src/cubic/Makefile.am: Added EXTRA_DIST files.
	* src/cubic/Makefile.in: Regenerated.
	* src/dijkstra/LICENSE: Made non-executable.
	* src/dijkstra/Makefile.am: Added EXTRA_DIST files.
	* src/dijkstra/Makefile.in: Regenerated.
	* src/fdct/Makefile.in: Regenerated.
	* src/float_matmult/Makefile.in: Regenerated.
	* src/int_matmult/Makefile.in: Regenerated.
	* src/platformcode/Makefile.am: Created.
	* src/platformcode/Makefile.in: Generated.
	* src/rijndael/LICENSE: Made non-executable.
	* src/rijndael/Makefile.am: Added EXTRA_DIST files.
	* src/rijndael/Makefile.in: Regenerated.
	* src/sha/Makefile.am: Added EXTRA_DIST files.
	* src/sha/Makefile.in: Regenerated.
	* src/template/Makefile.am: New comments about headers and EXTRA_DIST.
	* src/template/Makefile.in: Regenerated.