Fixes bug in StringWriter, which causes the compiler to

generate a segfault when there are too many string
concatenations. This happens when we convert a file of
about 100kb or larger.

The fix modifies the StringWriter to write the file data
out into a single, long string, without concatenations.

This addresses issue #5

stringwriter.go

@@ -1,37 +1,30 @@
 // This work is subject to the CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
 // license. Its contents can be found at:
 // http://creativecommons.org/publicdomain/zero/1.0/
-
-package main
-
-import (
-	"fmt"
-	"io"
-)
-
-var line = []byte("\"+\n\"")
-
-type StringWriter struct {
-	io.Writer
-	c int
-}
-
-func (w *StringWriter) Write(p []byte) (n int, err error) {
-	if len(p) == 0 {
-		return
-	}
-
-	for n = range p {
-		if w.c%16 == 0 {
-			w.Writer.Write(line)
-			w.c = 0
-		}
-
-		fmt.Fprintf(w.Writer, "\\x%02x", p[n])
-		w.c++
-	}
-
-	n++
-
-	return
-}
+
+package main
+
+import (
+	"fmt"
+	"io"
+)
+
+type StringWriter struct {
+	io.Writer
+	c int
+}
+
+func (w *StringWriter) Write(p []byte) (n int, err error) {
+	if len(p) == 0 {
+		return
+	}
+
+	for n = range p {
+		fmt.Fprintf(w.Writer, "\\x%02x", p[n])
+		w.c++
+	}
+
+	n++
+
+	return
+}