[HB] Rename open-types to open-type; beauty

src/Makefile.am

@@ -14,7 +14,7 @@ HBSOURCES =  \
 	hb-font-private.h \
 	hb-private.h \
 	hb-open-file-private.hh \
-	hb-open-types-private.hh \
+	hb-open-type-private.hh \
 	hb-ot-layout.cc \
 	hb-ot-layout-common-private.hh \
 	hb-ot-layout-gdef-private.hh \

src/hb-open-file-private.hh

@@ -27,7 +27,7 @@
 #ifndef HB_OPEN_FILE_PRIVATE_HH
 #define HB_OPEN_FILE_PRIVATE_HH
 
-#include "hb-open-types-private.hh"
+#include "hb-open-type-private.hh"
 
 
 /*

src/hb-ot-layout-common-private.hh

@@ -29,7 +29,7 @@
 
 #include "hb-ot-layout-private.h"
 
-#include "hb-open-types-private.hh"
+#include "hb-open-type-private.hh"
 
 
 /*