Add tcs; it compiles in my world, but I haven't tried it in Russ's yet.

src/cmd/tcs/font/font.c

@@ -0,0 +1,34 @@
+#include	<u.h>
+#include	<libc.h>
+#include	<libg.h>
+#include	<bio.h>
+#include	"hdr.h"
+
+Subfont *
+bf(int n, int size, Bitmap *b, int *done)
+{
+	Fontchar *fc;
+	int i, j;
+	Subfont *f;
+
+	fc = (Fontchar *)malloc(sizeof(Fontchar)*(n+1));
+	if(fc == 0){
+		fprint(2, "%s: fontchar malloc(%d) failure\n", argv0, sizeof(Fontchar)*(n+1));
+		exits("fontchar malloc failure");
+	}
+	j = 0;
+	for(i = 0; i <= n; i++){
+		fc[i] = (Fontchar){j, 0, size, 0, size};
+		if(done[i])
+			j += size;
+		else
+			fc[i].width = 0;
+	}
+	fc[n] = (Fontchar){j, 0, size, 0, size};
+	f = subfalloc(n, size, size*7/8, fc, b, ~0, ~0);
+	if(f == 0){
+		fprint(2, "%s: falloc failure\n", argv0);
+		exits("falloc failure");
+	}
+	return(f);
+}