Added inc.c. Restructured .*_LDADD assignments.

-bin_PROGRAMS = scan
+bin_PROGRAMS = scan inc
 noinst_LIBRARIES = libmh.a
 libmh_a_SOURCES= \
  mh_argp.c\
@@ -8,8 +8,11 @@ libmh_a_SOURCES= \
  mh_init.c\
  mh_fmtgram.y
 noinst_HEADERS = mh.h mh_getopt.h
-scan_SOURCES = scan.c 
+scan_SOURCES = scan.c
+inc_SOURCES = inc.c
 INCLUDES = -I${top_srcdir}/include -I${top_srcdir}/lib @ARGPINCS@
-scan_LDADD = ./libmh.a @ARGPLIBS@ ../mailbox/libmailbox.la ../lib/libmailutils.a -lcurses -ltermcap
+ALL_LDADD = ./libmh.a @ARGPLIBS@ ../mailbox/libmailbox.la ../lib/libmailutils.a
+scan_LDADD = $(ALL_LDADD)  -lcurses -ltermcap
+inc_LDADD = $(ALL_LDADD)
 YFLAGS=-vt