add build conditionals for python2, python3 and kwallet

Resolves: rhbz#1552079

subversion-1.9.7-pybinary.patch

@@ -1,3 +1,9 @@
+
+Ensure that python scripts executed during the build use the same python
+interpreter specified as $PYTHON by the spec file.
+
+https://bugzilla.redhat.com/show_bug.cgi?id=1552079
+
 --- subversion-1.9.7/build/generator/gen_make.py.pybinary
 +++ subversion-1.9.7/build/generator/gen_make.py
 @@ -507,7 +507,7 @@
@@ -9,3 +15,27 @@
      standalone.write('\n')
      standalone.write(open("build-outputs.mk","r").read())
      standalone.close()
+--- subversion-1.9.7/subversion/tests/cmdline/svntest/main.py.pybinary
++++ subversion-1.9.7/subversion/tests/cmdline/svntest/main.py
+@@ -126,7 +126,7 @@
+ if windows:
+   svneditor_script = os.path.join(sys.path[0], 'svneditor.bat')
+ else:
+-  svneditor_script = os.path.join(sys.path[0], 'svneditor.py')
++  svneditor_script = sys.executable + ' ' + os.path.join(sys.path[0], 'svneditor.py')
+ 
+ # Username and password used by the working copies
+ wc_author = 'jrandom'
+@@ -410,9 +410,9 @@
+   should be passed to wait_on_pipe."""
+   command = [str(x) for x in command]
+ 
+-  # On Windows subprocess.Popen() won't accept a Python script as
+-  # a valid program to execute, rather it wants the Python executable.
+-  if (sys.platform == 'win32') and (command[0].endswith('.py')):
++  # Always run python scripts under the same Python executable as used
++  # for the test suite.
++  if command[0].endswith('.py'):
+     command.insert(0, sys.executable)
+ 
+   command_string = command[0] + ' ' + ' '.join(map(_quote_arg, command[1:]))

subversion.spec

@@ -19,6 +19,8 @@
 # set JDK path to build javahl; default for JPackage
 %define jdk_path /usr/lib/jvm/java
 
+%{!?_httpd_mmn: %{expand: %%global _httpd_mmn %%(cat %{_includedir}/httpd/.mmn 2>/dev/null || echo 0-0)}}
+
 %define perl_vendorarch %(eval "`%{__perl} -V:installvendorarch`"; echo $installvendorarch)
 
 %if %{with python2}
@@ -153,7 +155,7 @@ passwords in the KDE Wallet.
 %package -n mod_dav_svn
 Group: System Environment/Daemons
 Summary: Apache httpd module for Subversion server
-Requires: httpd-mmn = %{?_httpd_mmn}
+Requires: httpd-mmn = %{_httpd_mmn}
 Requires: subversion-libs%{?_isa} = %{version}-%{release}
 BuildRequires: httpd-devel >= 2.0.45