Add GCMole to the repository.

tools/gcmole/Makefile

Index: tools/gcmole/Makefile
diff --git a/tools/gcmole/Makefile b/tools/gcmole/Makefile
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+++ b/tools/gcmole/Makefile
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+# Copyright 2011 the V8 project authors. All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of Google Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# This is Makefile for clang plugin part of gcmole tool. See README.
+
+LLVM_INCLUDE:=$(LLVM_SRC_ROOT)/include
+CLANG_INCLUDE:=$(LLVM_SRC_ROOT)/tools/clang/include
+
+libgcmole.so: gcmole.cc
+	g++ -I$(LLVM_INCLUDE) -I$(CLANG_INCLUDE) -I. -D_DEBUG -D_GNU_SOURCE \
+	-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -O3 		    \
+	-fomit-frame-pointer -fno-exceptions -fno-rtti -fPIC 	            \
+	-Woverloaded-virtual -Wcast-qual -fno-strict-aliasing               \
+	-pedantic -Wno-long-long -Wall 	                                    \
+	-W -Wno-unused-parameter -Wwrite-strings                            \
+	-shared -o libgcmole.so gcmole.cc
+
+clean:
+	rm libgcmole.so