Merge virtual mac-antialiasedtext and windows-directwrite test suites

LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/international/hebrew-vowels-expected.txt

-layer at (0,0) size 800x600
-  RenderView at (0,0) size 800x600
-layer at (0,0) size 800x600
-  RenderBlock {HTML} at (0,0) size 800x600
-    RenderBody {BODY} at (8,8) size 784x584
-      RenderBlock {P} at (0,0) size 784x18
-        RenderText {#text} at (0,0) size 279x18
-          text run at (0,0) width 279: "This test covers Hebrew vowel positioning."
-      RenderBlock {HR} at (0,34) size 784x2 [border: (1px inset #EEEEEE)]
-      RenderBlock {P} at (0,52) size 784x18
-        RenderText {#text} at (0,0) size 468x18
-          text run at (0,0) width 468: "The vowel (two vertical dots) should be centered beneath the main letter."
-      RenderBlock {DIV} at (0,86) size 784x97
-        RenderText {#text} at (57,5) size 74x92
-          text run at (57,5) width 74 RTL: "\x{5E1}\x{5B0} "
-        RenderText {#text} at (0,5) size 58x92
-          text run at (0,5) width 58 RTL: "\x{5E9}\x{5B0}"
-        RenderText {#text} at (0,0) size 0x0
-      RenderBlock {HR} at (0,191) size 784x2 [border: (1px inset #EEEEEE)]
-      RenderBlock {P} at (0,209) size 784x18
-        RenderText {#text} at (0,0) size 651x18
-          text run at (0,0) width 651: "The dot should be positioned on the right side of the first letter, and on the left side of the second one."
-      RenderBlock {DIV} at (0,243) size 784x194
-        RenderText {#text} at (0,5) size 58x92
-          text run at (0,5) width 58 RTL: "\x{5E9}\x{5C1}"
-        RenderBR {BR} at (57,77) size 1x0
-        RenderText {#text} at (0,102) size 58x92
-          text run at (0,102) width 58 RTL: "\x{5E9}\x{5C2}"
-        RenderText {#text} at (0,0) size 0x0