Applied patch #1635: Float patch for inf and nan on Windows (and other platforms).

The patch unifies float("inf") and repr(float("inf")) on all platforms.
diff --git a/Python/pystrcmp.c b/Python/pystrcmp.c
new file mode 100644
index 0000000..0012ef3
--- /dev/null
+++ b/Python/pystrcmp.c
@@ -0,0 +1,25 @@
+/* Cross platform case insenstive string compare functions
+ */
+
+#include "Python.h"
+
+int
+PyOS_mystrnicmp(const char *s1, const char *s2, Py_ssize_t size)
+{
+	if (size == 0)
+		return 0;
+	while ((--size > 0) && (tolower(*s1) == tolower(*s2))) {
+		if (!*s1++ || !*s2++)
+			break;
+	}
+	return tolower(*s1) - tolower(*s2);
+}
+
+int
+PyOS_mystricmp(const char *s1, const char *s2)
+{
+	while (*s1 && (tolower(*s1++) == tolower(*s2++))) {
+		;
+	}
+	return (tolower(*s1) - tolower(*s2));
+}