[config] Add HB_OPTIMIZE_SIZE_MORE and enable in HB_TINY

Part of https://github.com/harfbuzz/harfbuzz/issues/4220

src/OT/Layout/GSUB/LigatureSet.hh

@@ -83,7 +83,9 @@ struct LigatureSet
 
     unsigned int num_ligs = ligature.len;
 
+#ifndef HB_NO_OT_LIGATURES_FAST_PATH
     if (HB_OPTIMIZE_SIZE_VAL || num_ligs <= 2)
+#endif
     {
     slow:
       for (unsigned int i = 0; i < num_ligs; i++)

src/hb-config.hh

@@ -44,15 +44,14 @@
 #ifdef HB_TINY
 #define HB_LEAN
 #define HB_MINI
+#define HB_OPTIMIZE_SIZE
+#define HB_OPTIMIZE_SIZE_MORE
 #define HB_MINIMIZE_MEMORY_USAGE
 #define HB_NO_MT
 #define HB_NO_UCD_UNASSIGNED
 #ifndef NDEBUG
 #define NDEBUG
 #endif
-#ifndef __OPTIMIZE_SIZE__
-#define __OPTIMIZE_SIZE__
-#endif
 #endif
 
 #ifdef HB_LEAN
@@ -184,6 +183,10 @@
 #define HB_NO_OT_SHAPER_MYANMAR_ZAWGYI
 #endif
 
+#ifdef HB_OPTIMIZE_SIZE_MORE
+#define HB_NO_OT_LIGATURES_FAST_PATH
+#endif
+
 #ifdef HB_MINIMIZE_MEMORY_USAGE
 #define HB_NO_GDEF_CACHE
 #define HB_NO_OT_LAYOUT_LOOKUP_CACHE