steam-runtime-abi: filter libedit.so.2 private symbols
Using the default comparison by name might give a wrong result with libedit.so.2.
For example Scout provides libedit version 2.11 and the file is named
libedit.so.2.11
. Instead Debian Sid currently ships libedit version
3.1 but the file is named libedit.so.2.0.63
.
Instead, using the library symbols, should give us an higher chance of correctly identifying which one is newer. (T21954)
/cc @smcv
This includes the MR !77 (merged) , so it's probably better to review !77 (merged) first.