[gparted] Only install polkit action file when pkexec is used (#776437)

[Curtis Gedak <gedakc src gnome org>]

commit 2f559ec3b5a95f8781979c80bd260ad952645f36
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Fri Aug 4 07:38:56 2017 +0100

    Only install polkit action file when pkexec is used (#776437)
    
    Only install the GParted polkit action file when pkexec is being used as
    the root privilege escalation program.
    
    Bug 776437 - GParted fails to run as root under Wayland

 Makefile.am  |    4 +++-
 configure.ac |    2 ++
 2 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 03d5163..4edcd82 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -25,7 +25,9 @@ polkit_action_in_in_FILES = org.gnome.gparted.policy.in.in
 polkit_action_in_FILES = org.gnome.gparted.policy.in
 polkit_action_FILES = $(polkit_action_in_FILES:.policy.in=.policy)
 polkit_actiondir = $(datadir)/polkit-1/actions
-polkit_action_DATA = $(polkit_action_FILES)
+if INSTALL_POLKIT_ACTIONS
+  polkit_action_DATA = $(polkit_action_FILES)
+endif
 
 bin_SCRIPTS = gparted
 CLEANFILES = $(bin_SCRIPTS) $(DESKTOP_IN_FILES) $(polkit_action_in_FILES)
diff --git a/configure.ac b/configure.ac
index f2969d8..9fcd741 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,12 +25,14 @@ dnl Find graphical privilege escalation program
 dnl======================
 AC_CHECK_PROGS([GKSUPROG], [pkexec gksudo gksu kdesudo "xdg-su -c"], [])
 
+AM_CONDITIONAL([INSTALL_POLKIT_ACTIONS], false)
 if test "x$GKSUPROG" = 'xpkexec'; then
        AC_MSG_CHECKING([how to run pkexec])
        if pkexec --help 2>&1 | grep -q -- --disable-internal-agent; then
                GKSUPROG="$GKSUPROG --disable-internal-agent"
        fi
        AC_MSG_RESULT([$GKSUPROG])
+       AM_CONDITIONAL([INSTALL_POLKIT_ACTIONS], true)
 fi