add perl dir to the path at runtime on windows.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@759 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_apr.h

@@ -64,6 +64,7 @@ extern "C" {
 #define APR_WANT_STDIO
 #define APR_WANT_STRFUNC
 #include <apr_want.h>
+#include <apr_env.h>
 
 /*
    The pieces of apr we allow ppl to pass around between modules we typedef into our namespace and wrap all the functions