use more correct const char * for things that should not be modified. This should also fix the switch_cpp.cpp changes from MODAPP-44. More patches to follow up on this for a few more modules that will likely break with this commit.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6120 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/formats/mod_local_stream/mod_local_stream.c

@@ -143,7 +143,7 @@ static void *SWITCH_THREAD_FUNC read_stream_thread(switch_thread_t *thread, void
 	return NULL;
 }
 
-static switch_status_t local_stream_file_open(switch_file_handle_t *handle, char *path)
+static switch_status_t local_stream_file_open(switch_file_handle_t *handle, const char *path)
 {
 	local_stream_context_t *context;
 	local_stream_source_t *source;

src/mod/formats/mod_native_file/mod_native_file.c

@@ -40,7 +40,7 @@ struct native_file_context {
 
 typedef struct native_file_context native_file_context;
 
-static switch_status_t native_file_file_open(switch_file_handle_t *handle, char *path)
+static switch_status_t native_file_file_open(switch_file_handle_t *handle, const char *path)
 {
 	native_file_context *context;
 	char *ext;

src/mod/formats/mod_sndfile/mod_sndfile.c

@@ -55,7 +55,7 @@ struct sndfile_context {
 
 typedef struct sndfile_context sndfile_context;
 
-static switch_status_t sndfile_file_open(switch_file_handle_t *handle, char *path)
+static switch_status_t sndfile_file_open(switch_file_handle_t *handle, const char *path)
 {
 	sndfile_context *context;
 	int mode = 0;