Bootloader: Start work on bootloader

I wrote a fast first stage bootloader and a installer to put it into
a disk image.

bootloader/installer/GUID.cpp

@@ -0,0 +1,26 @@
+#include "GUID.h"
+
+#include <iomanip>
+#include <cstring>
+
+bool GUID::operator==(const GUID& other) const
+{
+	return std::memcmp(this, &other, sizeof(GUID)) == 0;
+}
+
+std::ostream& operator<<(std::ostream& out, const GUID& guid)
+{
+	auto flags = out.flags();
+	out << std::hex << std::setfill('0');
+	out << std::setw(8) << guid.component1 << '-';
+	out << std::setw(4) << guid.component2 << '-';
+	out << std::setw(4) << guid.component3 << '-';
+
+	out << std::setw(2);
+	for (int i = 0; i < 2; i++) out << +guid.component45[i];
+	out << '-';
+	for (int i = 2; i < 6; i++) out << +guid.component45[i];
+
+	out.flags(flags);
+	return out;
+}