Apply ICU patches for ICU tickets 6175 (ISO-2022 and ...

third_party/icu38/source/common/uset_imp.h

Index: third_party/icu38/source/common/uset_imp.h
===================================================================
--- third_party/icu38/source/common/uset_imp.h	(revision 10949)
+++ third_party/icu38/source/common/uset_imp.h	(working copy)
@@ -36,6 +36,9 @@
 typedef void U_CALLCONV
 USetRemove(USet *set, UChar32 c);
 
+typedef void U_CALLCONV
+USetRemoveRange(USet *set, UChar32 start, UChar32 end);
+
 /**
  * Interface for adding items to a USet, to keep low-level code from
  * statically depending on the USet implementation.
@@ -47,6 +50,7 @@
     USetAddRange *addRange;
     USetAddString *addString;
     USetRemove *remove;
+    USetRemoveRange *removeRange;
 };
 typedef struct USetAdder USetAdder;