glslang -> SPV: improved support for do-while/continue. Contributed by David Neto (dneto@google.com).

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@31205 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/spv.while-continue-break.vert

@@ -0,0 +1,20 @@
+#version 300 es
+void main() {
+  int i = 0;
+  int A, B, C, D;
+  while (i<10) {
+    A = 1;
+    if (i%2 == 0) {
+      B = 2;
+      continue;
+      C = 2;
+    }
+    if (i%5 == 0) {
+      B = 2;
+      break;
+      C = 2;
+    }
+    i++;
+  }
+  D = 3;
+}