Rename cairo-wideint.h to cairo-wideint-private.h.

RELEASING

@@ -34,7 +34,7 @@ Here are the steps to follow to create a new cairo release:
 	the following command will show each patch that has changed a
 	public header file since the given version:
 
-		find src/ -name '*.h' -not -name '*-private.h' -not -name 'cairoint.h' | \
+		find src/ -name '*.h' -not -name '*-private.h' -not -name '*-test.h' -not -name 'cairoint.h' | \
 		xargs git log -p X.Y.Z.. --
 
 4) Increment cairo_version_{minor|micro} and LT_{CURRENT|VERSION|AGE}

src/Makefile.am

@@ -198,7 +198,7 @@ libcairo_la_SOURCES =				\
 	cairo-unicode.c				\
 	cairo-output-stream.c			\
 	cairo-wideint.c				\
-	cairo-wideint.h				\
+	cairo-wideint-private.h			\
 	cairo-meta-surface.c			\
 	cairo-meta-surface-private.h		\
 	cairo-paginated-surface.c		\

src/cairoint.h

@@ -192,7 +192,7 @@ do {					\
     assert (NOT_REACHED);		\
 } while (0)
 
-#include "cairo-wideint.h"
+#include "cairo-wideint-private.h"
 
 typedef int32_t		cairo_fixed_16_16_t;
 typedef cairo_int64_t	cairo_fixed_32_32_t;