script: build src with compat vers enabled on mrel

Author: xdelaruelle

script/mrel

@@ -174,7 +174,7 @@ if {[catch {runcmd make distclean} errmsg]} {
    ignoreexp $errmsg {Makefile:37: *** Makefile.inc is missing, please run\
       './configure'.  Stop.}
 }
-if {[catch {runcmd ./configure} errmsg]} {
+if {[catch {runcmd ./configure --enable-compat-version} errmsg]} {
    # ignore stderr output which is not an error
    ignoreexp $errmsg "configure.ac:172: installing\
       'config/compile'\nconfigure.ac:16: installing\
@@ -267,7 +267,7 @@ cd /tmp/mods+test-gz
 runcmd tar xfz $cwd/$distgz
 cd modules-$relver
 reportInfo "Moved into '[pwd]' directory"
-runcmd ./configure
+runcmd ./configure --enable-compat-version
 runcmd make
 runcmd 2>@$logfid script/mt
 runcmd 2>@$logfid sudo make install
@@ -292,7 +292,7 @@ runcmd 2>@$logfid git clone $ghcloneurl
 cd modules
 reportInfo "Moved into '[pwd]' directory"
 runcmd 2>@$logfid git checkout $relbranch
-runcmd 2>@$logfid ./configure
+runcmd 2>@$logfid ./configure --enable-compat-version
 runcmd make
 runcmd 2>@$logfid script/mt
 runcmd 2>@$logfid sudo make install