Added sfdisk.  Ststic-ified a bunch of stuff.
diff --git a/grep.c b/grep.c
index de1c820..108c879 100644
--- a/grep.c
+++ b/grep.c
@@ -29,7 +29,7 @@
 #include <ctype.h>
 
 
-const char grep_usage[] =
+static const char grep_usage[] =
 "grep [-ihn]... PATTERN [FILE]...\n"
 "Search for PATTERN in each FILE or standard input.\n\n"
 "\t-h\tsuppress the prefixing filename on output\n"