Issue #21042: Return full path in ctypes.util.find_library() on Linux

Patch by Tamás Bence Gedai.
diff --git a/Misc/ACKS b/Misc/ACKS
index 6d8fcf8..0a67f39 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -487,6 +487,7 @@
 Stephen M. Gava
 Xavier de Gaye
 Harry Henry Gebel
+Tamás Bence Gedai
 Marius Gedminas
 Jan-Philip Gehrcke
 Thomas Gellekum
diff --git a/Misc/NEWS b/Misc/NEWS
index 205891b..d678a69 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -201,6 +201,9 @@
 Library
 -------
 
+- Issue #21042: Make ctypes.util.find_library() return the full path on
+  Linux, similar to other platforms.  Patch by Tamás Bence Gedai.
+
 - Issue #15068: Got rid of excessive buffering in fileinput.
   The bufsize parameter is now deprecated and ignored.