Added LF frequency adjustments from d18c7db, cleaned up code,

typo fixes in iso14443a code, added the missing "tools" directory,
added initial elements for online/offline detection for commands.

tools/merge-srec.pl

@@ -0,0 +1,18 @@
+# merge the code that initially executes out of flash with the RAM image
+
+($flashFile, $ramFile) = @ARGV;
+
+open(FLASH, $flashFile) or die "$flashFile: $!\n";
+
+while(<FLASH>) {
+	print if /^S3/;
+}
+
+open(RAM, $ramFile) or die "$ramFile: $!\n";
+
+while(<RAM>) {
+	if(/^S3(..)(........)(.*)/) {
+		$addr = sprintf('%08X', hex($2) - 0x00200000 + 0x200);
+		print "S3$1$addr$3\n";
+	}
+}