Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+# JS Fuzzing Interface
+
+This directory contains fuzzing targets that implement the unified fuzzing
+interface to be used with libFuzzer or AFL.
+
+## Building the fuzzing targets
+
+To include this directory in your JS build, you need to build with Clang
+and the --enable-fuzzing flag enabled. The build system will automatically
+detect if you are building with afl-clang-fast for AFL or regular Clang
+for libFuzzer.
+
+## Running a fuzzing target
+
+To run a particular target with libFuzzer, use:
+
+    cd $OBJDIR/dist/bin
+    FUZZER=YourTargetName ./fuzz-tests
+
+To run with AFL, use something like
+
+    cd $OBJDIR/dist/bin
+    FUZZER=YourTargetName MOZ_FUZZ_TESTFILE=input \
+    afl-fuzz <regular AFL options> -f input ./fuzz-tests
+
+
+## Writing a fuzzing target
+
+1.  Check testExample.cpp for a target skeleton with comments.
+
+2.  Add your own .cpp file to UNIFIED_SOURCES in moz.build