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/rbt2c.pl

@@ -0,0 +1,39 @@
+#!/usr/bin/perl
+
+# This tool converts a Xilinx xxx.rbt FPGA bitstream to a table that will
+# compile as C source code. The output format is DWORDs, MSB first.
+
+print "// Generated by rbt2c.pl, do not edit!\n\n";
+
+for(1..7) {
+	chomp($_ = <>);
+	print "//// $_\n";
+}
+
+print <<EOT;
+
+#include <proxmark3.h>
+
+const DWORD FpgaImage[] = {
+EOT
+
+while(<>) {
+	chomp;
+	$v = 0;
+	for $b (split(//, $_)) {
+		$v <<= 1;
+		if($b eq '1') {
+			$v |= 1;
+		} elsif($b ne '0') {
+			die;
+		}
+	}
+	printf("\t0x%08x,\n", $v);
+}
+
+print <<EOT;
+};
+
+const DWORD FpgaImageLen = sizeof(FpgaImage) / sizeof(FpgaImage[0]);
+
+EOT