explicitly include previously implicit headers (#5)

Author: rieder

sbin/getbytes.c

@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 /* Print out a specific range of bytes from the input file/stream.
  * For use with kiraindex.  In order to preserve a simple input

sbin/kiraformat.c

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 /*
  * Reformat kira output: convert (ascii or binary) to

sbin/kiraindex.c

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 /*
  * Reformat kira output: convert (ascii or binary) to

sbin/kiraindex2.c

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 /*
  * Reformat kira output: convert (ascii or binary) to