refactored alias.c heavily especially substituted the loop-based alias_expand() with a recursive approach. Now alias_expand() wraps alias_one() which recursively expands aliases. In principle the ``data processing'' is the same but now it's clearer structured and thus easier to understand IMO. The loop might have been faster but I don't care for speed -- the most simple solution is the best. It's fast enough, that is sufficient.

AM_CFLAGS=@CFLAGS@ @GLIB_CFLAGS@ -D_GNU_SOURCE

noinst_LIBRARIES=libmd5.a
noinst_PROGRAMS=hmactest

hmactest_SOURCES=\
	md5.h\
	md5.c\
	hmac_md5.h\
	hmac_md5.c\
	hmactest.c

libmd5_a_SOURCES=\
	md5.h\
	md5.c\
	hmac_md5.h\
	hmac_md5.c