gfxrecon-convert dumps binaries to 'stdout' directory

[bartosz-muszarski-arm]

Command:
gfxrecon-convert --output stdout --include-binaries trace.gfxr
will currently send json data to stdout and create "stdout" directory in the trace directory for the binary data.

The expected behavior is the binaries are created in the directory that matches the trace file name, as by default.

Additionally, for automation purposes it would be useful to have a --binary-output parameter allowing to specify a separate binary directory.