[sr-dev] Patch allowing app_lua lua_run to return values

Enclosed is a small patch that allows lua_run() to return an integer value. If the return value is not an integer, 1 is returned (like is true with current git master.) As a side effect, lua scripts can now exit() the sip-router script by returning 0. Example: Lua script: test_equality = function ( a , b ) if a == b then return 1 else return -1 end sip-router script: if (lua_run("test_equality", "$fU", "$tU")) { xdbg("SCRIPT: The values are equal\n"); }