Ignore egg-info directories and clean them

Test .gitignore and make clean distclean
    error: missing .gitignore entry for libselinux/src/selinux.egg-info/
    error: missing .gitignore entry for python/sepolicy/sepolicy.egg-info/
    Error: Process completed with exit code 1.

    error: "make clean distclean" did not remove libselinux/src/selinux.egg-info/PKG-INFO
    error: "make clean distclean" did not remove libselinux/src/selinux.egg-info/SOURCES.txt
    error: "make clean distclean" did not remove libselinux/src/selinux.egg-info/dependency_links.txt
    error: "make clean distclean" did not remove libselinux/src/selinux.egg-info/top_level.txt
    error: "make clean distclean" did not remove python/sepolicy/sepolicy.egg-info/PKG-INFO
    error: "make clean distclean" did not remove python/sepolicy/sepolicy.egg-info/SOURCES.txt
    error: "make clean distclean" did not remove python/sepolicy/sepolicy.egg-info/dependency_links.txt
    error: "make clean distclean" did not remove python/sepolicy/sepolicy.egg-info/top_level.txt
    Error: Process completed with exit code 1.

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Acked-by: James Carter <jwcart2@gmail.com>

libselinux/src/.gitignore

@@ -1,3 +1,4 @@
 selinux.py
 selinuxswig_python_wrap.c
 selinuxswig_ruby_wrap.c
+selinux.egg-info/

libselinux/src/Makefile

@@ -201,7 +201,7 @@ relabel:
 clean-pywrap:
 	-rm -f $(SWIGLOBJ) $(SWIGSO) $(AUDIT2WHYLOBJ) $(AUDIT2WHYSO)
 	$(PYTHON) setup.py clean
-	-rm -rf build *~ \#* *pyc .#*
+	-rm -rf build *~ \#* *pyc .#* selinux.egg-info/
 
 clean-rubywrap:
 	-rm -f $(SWIGRUBYLOBJ) $(SWIGRUBYSO)

python/sepolicy/.gitignore

@@ -1,3 +1,4 @@
 build
 tmp
 *.bak
+sepolicy.egg-info/

python/sepolicy/Makefile

@@ -18,7 +18,7 @@ python-build:
 
 clean:
 	$(PYTHON) setup.py clean
-	-rm -rf build *~ \#* *pyc .#*
+	-rm -rf build *~ \#* *pyc .#* sepolicy.egg-info/
 
 sepolgen:
 	ln -sf sepolicy sepolgen