default_backend : remove unused variable and change variables as static
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-rw-r--r-- 1257 COPYING
-rw-r--r-- 96 Makefile.am
-rw-r--r-- 137 README.md
-rwxr-xr-x 200 autogen.sh
drwxr-xr-x - backends
-rw-r--r-- 1902 configure.ac
drwxr-xr-x - doc
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