Fixes for build & run under Ubuntu

[Heath Kehoe]

There are a couple of problems when I tried to build (using sources from 
Git) and run under Ubuntu 12.04.3.

First, there are a couple of compiler errors that look like this:

qmi-device.c: In function 'input_ready_cb':
qmi-device.c:1344:12: error: declaration of 'read' shadows a global declaration [-Werror=shadow]
cc1: all warnings being treated as errors
make[4]: *** [libqmi_glib_la-qmi-device.lo] Error 1

Second, the qmi-network script doesn't work properly because it uses a 
bash-specific "source" command. In Ubuntu, /bin/sh is dash. The solution 
is to just change "source" to a dot, which is the proper way to do a 
"source" in POSIX sh.

The patch below fixes these issues.

diff --git a/src/libqmi-glib/qmi-device.c b/src/libqmi-glib/qmi-device.c
index 286f5d7..e8ae96f 100644
--- a/src/libqmi-glib/qmi-device.c
+++ b/src/libqmi-glib/qmi-device.c
@@ -1341,14 +1341,14 @@ input_ready_cb (GInputStream *istream,
  {
      guint8 buffer[BUFFER_SIZE];
      GError *error = NULL;
-    gssize read;
+    gssize r;
  
-    read = g_pollable_input_stream_read_nonblocking (G_POLLABLE_INPUT_STREAM (istream),
+    r = g_pollable_input_stream_read_nonblocking (G_POLLABLE_INPUT_STREAM (istream),
                                                       buffer,
                                                       BUFFER_SIZE,
                                                       NULL,
                                                       &error);
-    if (read < 0) {
+    if (r < 0) {
          g_warning ("Error reading from istream: %s", error ? error->message : "unknown");
          if (error)
              g_error_free (error);
@@ -1357,16 +1357,16 @@ input_ready_cb (GInputStream *istream,
          return FALSE;
      }
  
-    if (read == 0) {
+    if (r == 0) {
          /* HUP! */
          g_warning ("Cannot read from istream: connection broken");
          return FALSE;
      }
  
-    /* else, read > 0 */
+    /* else, r > 0 */
      if (!G_UNLIKELY (self->priv->buffer))
-        self->priv->buffer = g_byte_array_sized_new (read);
-    g_byte_array_append (self->priv->buffer, buffer, read);
+        self->priv->buffer = g_byte_array_sized_new (r);
+    g_byte_array_append (self->priv->buffer, buffer, r);
  
      /* Try to parse input messages */
      parse_response (self);
diff --git a/src/libqmi-glib/qmi-proxy.c b/src/libqmi-glib/qmi-proxy.c
index f956746..1b0c1ba 100644
--- a/src/libqmi-glib/qmi-proxy.c
+++ b/src/libqmi-glib/qmi-proxy.c
@@ -557,7 +557,7 @@ connection_readable_cb (GSocket *socket,
  {
      guint8 buffer[BUFFER_SIZE];
      GError *error = NULL;
-    gssize read;
+    gssize r;
  
      if (condition & G_IO_HUP || condition & G_IO_ERR) {
          g_debug ("client connection closed");
@@ -568,12 +568,12 @@ connection_readable_cb (GSocket *socket,
      if (!(condition & G_IO_IN || condition & G_IO_PRI))
          return TRUE;
  
-    read = g_input_stream_read (g_io_stream_get_input_stream (G_IO_STREAM (client->connection)),
+    r = g_input_stream_read (g_io_stream_get_input_stream (G_IO_STREAM (client->connection)),
                                  buffer,
                                  BUFFER_SIZE,
                                  NULL,
                                  &error);
-    if (read < 0) {
+    if (r < 0) {
          g_warning ("Error reading from istream: %s", error ? error->message : "unknown");
          if (error)
              g_error_free (error);
@@ -582,13 +582,13 @@ connection_readable_cb (GSocket *socket,
          return FALSE;
      }
  
-    if (read == 0)
+    if (r == 0)
          return TRUE;
  
-    /* else, read > 0 */
+    /* else, r > 0 */
      if (!G_UNLIKELY (client->buffer))
-        client->buffer = g_byte_array_sized_new (read);
-    g_byte_array_append (client->buffer, buffer, read);
+        client->buffer = g_byte_array_sized_new (r);
+    g_byte_array_append (client->buffer, buffer, r);
  
      /* Try to parse input messages */
      parse_request (client);
diff --git a/utils/qmi-network.in b/utils/qmi-network.in
index 2bef24a..1470f38 100755
--- a/utils/qmi-network.in
+++ b/utils/qmi-network.in
@@ -69,7 +69,7 @@ load_profile ()
  {
      if [ -f $PROFILE_FILE ]; then
          echo "Loading profile..."
-        source $PROFILE_FILE
+        . $PROFILE_FILE
  
          if [ "x$APN" != "x" ]; then
              echo "    APN: $APN"
@@ -103,7 +103,7 @@ load_state ()
  {
      if [ -f $STATE_FILE ]; then
          echo "Loading previous state..."
-        source $STATE_FILE
+        . $STATE_FILE
  
          if [ "x$CID" != "x" ]; then
              echo "    Previous CID: $CID"