Combine diff-spec args and pipe to diff 	COMPLETE	Fixed 'W'
Test script					COMPLETE
Adapt code to FreeBSD style guidelines		COMPLETE
Fix --width output indention			COMPLETE
--help						COMPLETE
Add more information to man file.		COMPLETE
Fix sdiff to work with binary data		COMPLETE	TODO: Add some error checking
Replace goto statements				COMPLETE
zsdiff integration				COMPLETE
NOTES:

- In diff, 'w' is used for --ignore-all-spaces instead of 'W'. When 'W' is passed to sdiff, it must be passed to diff as 'w'.

- BUG: Right side of output is 2 spaces further than GNU sdiff's output.
	-FIX: In println(), change column width to width-1, take out 
		extra space when it prints 'div' on no right column. 

- diff-specific args:

     -a      Treat file1 and file2 as text files.
     -b      Ignore trailing blank spaces.
     -d      Minimize diff size.
     -I regexp
             Ignore line changes matching regexp.  All lines in the change
             must match regexp for the change to be ignored.
	NOTE: Missing ')' on tests.

     -i      Do a case-insensitive comparison.
     -t      Expand tabs to spaces.
     -W      Ignore all spaces (the -w flag is passed to diff(1)).


- gdb output for zsdiff:

jesse@jesse /u/h/j/D/sdiff> gdb ./zsdiff
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you 
are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for 
details.
This GDB was configured as "amd64-marcel-freebsd"...
(gdb) run sdiff.gz sdiff.1.gz
Starting program: /usr/home/jesse/Documents/sdiff/zsdiff sdiff.gz 
sdiff.1.gz

Program received signal SIGBUS, Bus error.
0x0000000800d6bad8 in getdtablesize () from /lib/libc.so.7
(gdb) where
#0  0x0000000800d6bad8 in getdtablesize () from /lib/libc.so.7
#1  0x0000000800d4fae8 in funopen () from /lib/libc.so.7
#2  0x0000000800d4f5ca in rewind () from /lib/libc.so.7
#3  0x000000000040218a in istextfile (f=0x7fffffffdb77) at sdiff.c:558
#4  0x0000000000402e44 in main (argc=2, argv=Variable "argv" is not 
available.
) at sdiff.c:468
(gdb) list
468		if (!istextfile(file1) || !istextfile(file2)) {
469			/* Close open files and pipe, delete temps */ 
470			fclose(file1);
471			fclose(file2);
472			fclose(diffpipe);
473			if (tmp1)
474				if (unlink(tmp1))
475					warn("Error deleting %s.", 
tmp1);
476			if (tmp2)
477				if (unlink(tmp2))