spec: Add support for user-flags configure option

Passing -ggdb3 (or -g3) during compiler may result in corrupted
debuginfo files (bug in debugedit - for Fedora filed as a
https://bugzilla.redhat.com/show_bug.cgi?id=1708786). Until the bug is
fixed it's possible to ether change configure to add -ggdb2/-g2 or use
already existing --enable-user-flags option and rely on environment set
by rpmbuild.

Patch implements second option so RPM distros without broken debugedit
are not affected.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Christine Caulfield <ccaulfie@redhat.com>

corosync.spec.in

@@ -14,6 +14,7 @@
 %bcond_with nozzle
 %bcond_with vqsim
 %bcond_with runautogen
+%bcond_with userflags
 
 %global gitver %{?numcomm:.%{numcomm}}%{?alphatag:.%{alphatag}}%{?dirty:.%{dirty}}
 %global gittarver %{?numcomm:.%{numcomm}}%{?alphatag:-%{alphatag}}%{?dirty:-%{dirty}}
@@ -107,6 +108,9 @@ BuildRequires: readline-devel
 %endif
 %if %{with vqsim}
 	--enable-vqsim \
+%endif
+%if %{with userflags}
+	--enable-user-flags \
 %endif
 	--with-initddir=%{_initrddir} \
 	--with-systemddir=%{_unitdir} \