Add bitreader to LINK_COMPONENTS in users of libclang, c-arcmt-test and c-index-test.

They don't link cygclang.dll, but libclang.a on cygwin.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172980 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/c-arcmt-test/Makefile b/tools/c-arcmt-test/Makefile
index 3372dae..1b78df0 100644
--- a/tools/c-arcmt-test/Makefile
+++ b/tools/c-arcmt-test/Makefile
@@ -21,7 +21,7 @@
 # LINK_COMPONENTS before including Makefile.rules
 include $(CLANG_LEVEL)/../../Makefile.config
 
-LINK_COMPONENTS := $(TARGETS_TO_BUILD) asmparser support mc
+LINK_COMPONENTS := $(TARGETS_TO_BUILD) asmparser bitreader support mc
 
 # Note that 'USEDLIBS' must include all of the core clang libraries
 # as clang.dll is unavailable on cygming yet.
diff --git a/tools/c-index-test/Makefile b/tools/c-index-test/Makefile
index 1171954..dd5d1ef 100644
--- a/tools/c-index-test/Makefile
+++ b/tools/c-index-test/Makefile
@@ -22,7 +22,7 @@
 # LINK_COMPONENTS before including Makefile.rules
 include $(CLANG_LEVEL)/../../Makefile.config
 
-LINK_COMPONENTS := $(TARGETS_TO_BUILD) asmparser support mc
+LINK_COMPONENTS := $(TARGETS_TO_BUILD) asmparser bitreader support mc
 USEDLIBS = clang.a \
 	   clangFormat.a clangRewriteCore.a \
 	   clangFrontend.a clangDriver.a \