Add Makefiles, fix some compile errors

There are more compile errors, especially in the cross-assemblers.
But I'm leaving those for someone else.

extracters/mtdump/Makefile

@@ -0,0 +1,20 @@
+# all of these can be over-ridden on the "make" command line if they don't suit your environment.
+TOOL=mtdump
+CFLAGS=-O2 -Wall -Wshadow -Wextra -pedantic -Woverflow -Wstrict-overflow
+BIN=/usr/local/bin
+INSTALL=install
+CC=gcc
+
+$(TOOL): $(TOOL).c
+	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $(TOOL) $(TOOL).c $(LDLIBS)
+
+.PHONY: clean install uninstall
+
+clean:
+	rm -f $(TOOL)
+
+install: $(TOOL)
+	$(INSTALL) -p -m u=rx,g=rx,o=rx $(TOOL) $(BIN)
+
+uninstall:
+	rm -f $(BIN)/$(TOOL)

extracters/mtdump/mtdump.c

@@ -42,9 +42,10 @@
 int main (int argc, char *argv[])
 {
 int obj, i, k, fc, rc, tpos;
-unsigned int bc, fmt, rlntsiz;
-unsigned char *s, bca[4];
-int preveof, gapcount, gpos, gincr;
+unsigned int bc = 0, fmt, rlntsiz;
+ unsigned char *s;
+ unsigned char bca[4] = { 0,0,0,0 };
+int preveof, gapcount, gpos = 0, gincr;
 FILE *ifile;
 #define MAXRLNT 65536
 
@@ -62,7 +63,7 @@ if ((s != NULL) && (*s++ == '-')) {
 	    fmt = F_E11; rlntsiz = 4; break;
         case 'C': case 'c':
 	    fmt = F_TPC; rlntsiz = 2; break;
-/*	case 'F': case 'f':
+            /*	case 'F': case 'f': */
 /*	    fmt = F_TPF; break; */
 	default:
 	    fprintf (stderr, "Bad option %c\n", *s);