Fix Jittor Utils Config Bugs

[delldu]

1. Two Bugs for 'Jittor Utils Config':

1. Bug 1: Command option for 'python -m jittor_utils.config'
   $ python -m jittor_utils.config
   Usage: /home/dell/miniconda3/envs/numba/bin/python -m jittor_utils.config --include-flags|--link-flags|--cxx-flags|--cxx-example|--help

Expected:
Usage: /home/dell/miniconda3/envs/numba/bin/python -m jittor_utils.config --include-flags|--libs-flags|--cxx-flags|--cxx-example|--help

2. Bug 2: example could not find libpython3.10.so.1.0

$  python -m jittor_utils.config --cxx-example > example.cc
$　g++ example.cc $(python -m jittor_utils.config --include-flags --libs-flags --cxx-flags) -o example
$ ./example

./example: error while loading shared libraries: libpython3.10.so.1.0: cannot open shared object file: No such file or directory
$ ldd example
linux-vdso.so.1 (0x00007fff99cb2000)
libpython3.10.so.1.0 => not found
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f2732a25000)
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f2732843000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f2732828000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f2732636000)
/lib64/ld-linux-x86-64.so.2 (0x00007f2732a59000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f27324e7000)

2. Fixed Results

1. Bug 1:
   $ python -m jittor_utils.config
   Usage: /home/dell/miniconda3/envs/numba/bin/python -m jittor_utils.config --include-flags|--libs-flags|--cxx-flags|--cxx-example|--help

2. Bug 2:
   $ python -m jittor_utils.config --libs-flags
   -Wl,-rpath=/home/dell/miniconda3/envs/numba/lib -L/home/dell/miniconda3/envs/numba/lib -lpython3.10 -ldl

$ python -m jittor_utils.config --cxx-example > example.cc
$ g++ example.cc $(python -m jittor_utils.config --include-flags --libs-flags --cxx-flags) -o example
$ ./example

...
pred.shape 2 1000

$ ldd example
linux-vdso.so.1 (0x00007ffdd2c92000)
libpython3.10.so.1.0 => /home/dell/miniconda3/envs/numba/lib/libpython3.10.so.1.0 (0x00007ff04eeb6000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007ff04ee95000)
libstdc++.so.6 => /home/dell/miniconda3/envs/numba/lib/libstdc++.so.6 (0x00007ff04ec81000)
libgcc_s.so.1 => /home/dell/miniconda3/envs/numba/lib/libgcc_s.so.1 (0x00007ff04ec67000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007ff04ea75000)
libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007ff04ea70000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007ff04e91f000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007ff04e8fc000)
/lib64/ld-linux-x86-64.so.2 (0x00007ff04f295000)

[delldu]

$ python setup.py build
running build
running build_py
copying python/jittor/compiler.py -> build/lib/jittor
package init file 'python/jittor/test/init.py' not found (or not a regular file)
package init file 'python/jittor/utils/init.py' not found (or not a regular file)
copying python/jittor_utils/init.py -> build/lib/jittor_utils