redirect expanding commands' stderr to /dev/null which possibly throw error message
check if *rc file exists
check if $rcfile is not null
cosmetic changes
treat match failed case
strictly check shell type
missing latest tag for alisp-9.0
(ref #11) fix failure of ccl installation
use `cim_error` and `cim_message` for error and message instead of simple `echo`
use `__which` in place of `which`.

`__which` uses `command -v` rather than `which`.
ensure cim_utils is loaded
sbcl latest is 1.2.1
alignment
Merge branch 'develop' of github.com:KeenS/CIM into develop