Avoid C4115 from uses `struct time *` in pytime.h

avoid-c4115-r1868290.diff

Index: subversion/bindings/swig/include/svn_global.swg
===================================================================
--- subversion/bindings/swig/include/svn_global.swg	(revision 1868505)
+++ subversion/bindings/swig/include/svn_global.swg	(working copy)
@@ -34,6 +34,7 @@
 #ifdef SWIGPYTHON
 %begin %{
 #define SWIG_PYTHON_STRICT_BYTE_CHAR
+struct timeval;  /* avoid C4115 from uses `struct time *` in pytime.h */
 %}
 #endif
 
Index: subversion/bindings/swig/python/libsvn_swig_py/swigutil_py.c
===================================================================
--- subversion/bindings/swig/python/libsvn_swig_py/swigutil_py.c	(revision 1868505)
+++ subversion/bindings/swig/python/libsvn_swig_py/swigutil_py.c	(working copy)
@@ -24,6 +24,8 @@
 /* Tell swigutil_py.h that we're inside the implementation */
 #define SVN_SWIG_SWIGUTIL_PY_C
 
+struct timeval;  /* avoid C4115 from uses `struct time *` in pytime.h */
+
 #include <Python.h>