abicheck: Use ${NM} and fall back to `nm`
tree125e7f780b89eecf6e4e21c688fdafe88f0daa2e
-rw-r--r-- 26527 COPYING
-rw-r--r-- 2889 HACKING
-rw-r--r-- 20110 NEWS
-rw-r--r-- 3502 README
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drwxr-xr-x - client
drwxr-xr-x - common
-rw-r--r-- 1108 dconf.doap
drwxr-xr-x - docs
drwxr-xr-x - engine
drwxr-xr-x - gdbus
drwxr-xr-x - gsettings
drwxr-xr-x - gvdb
-rw-r--r-- 2872 meson.build
-rw-r--r-- 661 meson_options.txt
-rw-r--r-- 184 meson_post_install.py
drwxr-xr-x - service
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drwxr-xr-x - tests
-rwxr-xr-x 1427 trim-lcov.py