rstrip.sh: fix handling variations in "file" output
-rw-r--r-- 8 .gitattributes
drwxr-xr-x - .github
-rw-r--r-- 233 .gitignore
-rw-r--r-- 179 BSDmakefile
-rw-r--r-- 573 Config.in
-rw-r--r-- 17992 LICENSE
-rw-r--r-- 3026 Makefile
-rw-r--r-- 1014 README
drwxr-xr-x - config
-rw-r--r-- 295 feeds.conf.default
drwxr-xr-x - include
drwxr-xr-x - package
-rw-r--r-- 12767 rules.mk
drwxr-xr-x - scripts
drwxr-xr-x - target
drwxr-xr-x - toolchain
drwxr-xr-x - tools