Clean up file names, add namespace

src/harfbuzz-common.h

-#ifndef HARFBUZZ_COMMON_H
-#define HARFBUZZ_COMMON_H
-
-#include <stdint.h>
-
-# ifdef __cplusplus
-#  define HARFBUZZ_BEGIN_DECLS() extern "C" { extern int harfbuzz_dummy_prototype (int)
-#  define HARFBUZZ_END_DECLS() } extern "C" int harfbuzz_dummy_prototype (int)
-# else /* !__cplusplus */
-#  define HARFBUZZ_BEGIN_DECLS()   extern int harfbuzz_dummy_prototype (int)
-#  define HARFBUZZ_END_DECLS()     extern int harfbuzz_dummy_prototype (int)
-# endif /* !__cplusplus */
-
-#endif /* HARFBUZZ_COMMON_H */

src/harfbuzz-gdef.h

-#ifndef HARFBUZZ_GDEF_H
-#define HARFBUZZ_GDEF_H
-
-#include "harfbuzz-common.h"
-
-HARFBUZZ_BEGIN_DECLS();
-
-
-HARFBUZZ_END_DECLS();
-
-#endif /* HARFBUZZ_GDEF_H */

src/hb-common.h

+#ifndef HB_COMMON_H
+#define HB_COMMON_H
+
+#include <stdint.h>
+
+# ifdef __cplusplus
+#  define HB_BEGIN_DECLS() extern "C" { extern int hb_dummy_prototype (int)
+#  define HB_END_DECLS() } extern "C" int hb_dummy_prototype (int)
+# else /* !__cplusplus */
+#  define HB_BEGIN_DECLS()   extern int hb_dummy_prototype (int)
+#  define HB_END_DECLS()     extern int hb_dummy_prototype (int)
+# endif /* !__cplusplus */
+
+#endif /* HB_COMMON_H */

src/harfbuzz-gdef-private.h → src/hb-ot-layout-gdef-private.h

-#ifndef HARFBUZZ_GDEF_PRIVATE_H
-#define HARFBUZZ_GDEF_PRIVATE_H
+#ifndef HB_OT_LAYOUT_GDEF_PRIVATE_H
+#define HB_OT_LAYOUT_GDEF_PRIVATE_H
 
-#include "harfbuzz-open-private.h"
+#include "hb-ot-layout-open-private.h"
 
 struct GlyphClassDef : ClassDef {
   static const uint16_t BaseGlyph		= 0x0001u;
@@ -210,4 +210,4 @@ struct GDEFHeader {
 };
 DEFINE_NULL_ASSERT_SIZE (GDEFHeader, 12);
 
-#endif /* HARFBUZZ_GDEF_PRIVATE_H */
+#endif /* HB_OT_LAYOUT_GDEF_PRIVATE_H */

src/harfbuzz-open-private.h → src/hb-ot-layout-open-private.h

-#ifndef HARFBUZZ_OPEN_PRIVATE_H
-#define HARFBUZZ_OPEN_PRIVATE_H
+#ifndef HB_OT_LAYOUT_OPEN_PRIVATE_H
+#define HB_OT_LAYOUT_OPEN_PRIVATE_H
 
-#include "harfbuzz-private.h"
-#include "harfbuzz-open.h"
+#include "hb-private.h"
+#include "hb-ot-layout.h"
 
 #include <glib.h>
 
@@ -801,4 +801,4 @@ DEFINE_NULL_ASSERT_SIZE (GSUBGPOSHeader, 10);
 DEFINE_NULL_ALIAS (GSUBHeader, GSUBGPOSHeader);
 DEFINE_NULL_ALIAS (GPOSHeader, GSUBGPOSHeader);
 
-#endif /* HARFBUZZ_OPEN_PRIVATE_H */
+#endif /* HB_OT_LAYOUT_OPEN_PRIVATE_H */

src/harfbuzz-open.h → src/hb-ot-layout.h

-#ifndef HARFBUZZ_OPEN_H
-#define HARFBUZZ_OPEN_H
+#ifndef HB_OT_LAYOUT_OPEN_H
+#define HB_OT_LAYOUT_OPEN_H
 
-#include "harfbuzz-common.h"
+#include "hb-common.h"
 
-HARFBUZZ_BEGIN_DECLS();
+HB_BEGIN_DECLS();
 
 typedef uint32_t hb_tag_t;
 #define HB_TAG(a,b,c,d) ((hb_tag_t)(((uint8_t)a<<24)|((uint8_t)b<<16)|((uint8_t)c<<8)|(uint8_t)d))
@@ -12,6 +12,6 @@ typedef uint32_t hb_tag_t;
 				((const char *) s)[2], \
 				((const char *) s)[3]))
 
-HARFBUZZ_END_DECLS();
+HB_END_DECLS();
 
-#endif /* HARFBUZZ_OPEN_H */
+#endif /* HB_OT_LAYOUT_OPEN_H */

src/harfbuzz-private.h → src/hb-private.h

-#ifndef HARFBUZZ_PRIVATE_H
-#define HARFBUZZ_PRIVATE_H
+#ifndef HB_PRIVATE_H
+#define HB_PRIVATE_H
 
 #include <assert.h>
 
@@ -9,4 +9,4 @@
 
 #define ASSERT_SIZE(_type, _size) ASSERT_STATIC (sizeof (_type) == (_size))
 
-#endif /* HARFBUZZ_PRIVATE_H */
+#endif /* HB_PRIVATE_H */

src/main.cc

-#include "harfbuzz-open-private.h"
-#include "harfbuzz-gdef-private.h"
+#include "hb-ot-layout-open-private.h"
+#include "hb-ot-layout-gdef-private.h"
 
 #include <stdlib.h>
 #include <stdio.h>