Shuffle buffer variable allocations around

To room for more allocations, coming.

src/hb-ot-layout-private.hh

@@ -39,9 +39,9 @@
 
 
 /* buffer var allocations, used during the GSUB/GPOS processing */
-#define glyph_props()		var1.u16[1] /* GDEF glyph properties */
-#define syllable()		var2.u8[0] /* GSUB/GPOS shaping boundaries */
-#define lig_props()		var2.u8[1] /* GSUB/GPOS ligature tracking */
+#define glyph_props()		var1.u16[0] /* GDEF glyph properties */
+#define syllable()		var1.u8[2] /* GSUB/GPOS shaping boundaries */
+#define lig_props()		var1.u8[3] /* GSUB/GPOS ligature tracking */
 
 #define hb_ot_layout_from_face(face) ((hb_ot_layout_t *) face->shaper_data.ot)
 

src/hb-ot-shape-complex-arabic.cc

@@ -30,7 +30,7 @@
 
 
 /* buffer var allocations */
-#define arabic_shaping_action() complex_var_temporary_u8() /* arabic shaping action */
+#define arabic_shaping_action() complex_var_u8_0() /* arabic shaping action */
 
 
 /*

src/hb-ot-shape-complex-indic-private.hh

@@ -35,8 +35,8 @@
 
 
 /* buffer var allocations */
-#define indic_category() complex_var_persistent_u8_0() /* indic_category_t */
-#define indic_position() complex_var_persistent_u8_1() /* indic_matra_category_t */
+#define indic_category() complex_var_u8_0() /* indic_category_t */
+#define indic_position() complex_var_u8_1() /* indic_matra_category_t */
 
 
 #define INDIC_TABLE_ELEMENT_TYPE uint8_t

src/hb-ot-shape-complex-private.hh

@@ -35,9 +35,8 @@
 
 
 /* buffer var allocations, used by complex shapers */
-#define complex_var_persistent_u8_0()	var2.u8[2]
-#define complex_var_persistent_u8_1()	var2.u8[3]
-#define complex_var_temporary_u8()	var2.u8[0]
+#define complex_var_u8_0()	var2.u8[2]
+#define complex_var_u8_1()	var2.u8[3]
 
 
 

src/hb-ot-shape-private.hh

@@ -34,8 +34,8 @@
 
 
 /* buffer var allocations, used during the entire shaping process */
-#define unicode_props0()	var1.u8[0]
-#define unicode_props1()	var1.u8[1]
+#define unicode_props0()	var2.u8[0]
+#define unicode_props1()	var2.u8[1]