Fix auto soname requires on non-versioned targets

RPM's macro engine itself understands backslash escapes so we need to
double-escape these, otherwise we may accidentally match symlink targets
that contain the substring "so" in their names, such as:

    libechosounder.so -> libechosounder2.so
                                ~~
                                 ^ this is currently matched

Whereas we only want these to be processed:

    libechosounder.so -> libechosounder.so.2
                                       ~~~~~
                                           ^ this should be matched

Resolves: RHEL-54592

libsymlink.attr

@@ -1,5 +1,5 @@
 # Make libfoo.so symlinks require the soname-provide of the target library
 %__libsymlink_requires		%{_rpmconfigdir}/elfdeps --provides --soname-only
-%__libsymlink_magic		^symbolic link to .*lib.*\.so\..*$
-%__libsymlink_path	^.*\.so$
+%__libsymlink_magic		^symbolic link to .*lib.*\\.so\\..*$
+%__libsymlink_path	^.*\\.so$
 %__libsymlink_flags	magic_and_path

redhat-rpm-config.spec

@@ -4,7 +4,7 @@
 # 2) When making changes, increment the version (in baserelease) by 1.
 #    rpmdev-bumpspec and other tools update the macro below, which is used
 #    in Version: to get the desired effect.
-%global baserelease 287
+%global baserelease 288
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
@@ -259,6 +259,9 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora common.lua
 %doc buildflags.md
 
 %changelog
+* Wed Feb 12 2025 Michal Domonkos <mdomonko@redhat.com> - 288-1
+- Fix automatic soname requires on non-versioned symlink targets (RHEL-54592)
+
 * Tue Oct 29 2024 Troy Dawson <tdawson@redhat.com> - 287-1
 - Bump release for October 2024 mass rebuild:
   Resolves: RHEL-64018