Qt+tools: Fix most of our lupdate warnings.

Fix various warnings with the following changes:

Pass a list of include directories to lupdate. Fixes:

    ui/qt/proto_tree.cpp:57: Qualifying with unknown namespace/class ::ProtoTree

and similar warnings.

Use QT_TRANSLATE_NOOP instead of QT_TR_NOOP. Fixes:

    ui/qt/lte_rlc_statistics_dialog.cpp:993: tr() cannot be called without context
    ui/qt/lte_mac_statistics_dialog.cpp:911: tr() cannot be called without context
    ui/qt/font_color_preferences_frame.cpp:28: tr() cannot be called without context
    ui/qt/font_color_preferences_frame.cpp:29: tr() cannot be called without context
    ui/qt/font_color_preferences_frame.cpp:30: Discarding unconsumed meta data

Add Q_OBJECT to the class definition. Fixes:

    ui/qt/models/filter_list_model.cpp:120: Class 'FilterListModel' lacks Q_OBJECT macro

The following warnings were not fixed. This might require moving IOGraph
to its own file:

    ui/qt/io_graph_dialog.cpp:320: Qualifying with unknown namespace/class ::IOGraphDialog
    ui/qt/io_graph_dialog.cpp:555: Qualifying with unknown namespace/class ::IOGraphDialog
    ui/qt/io_graph_dialog.cpp:1059: Qualifying with unknown namespace/class ::IOGraphDialog
    ui/qt/io_graph_dialog.cpp:1485: Qualifying with unknown namespace/class ::IOGraphDialog

tools/update-tx

@@ -12,13 +12,26 @@ while getopts "n" OPTCHAR ; do
 done
 shift $((OPTIND - 1))
 
+TOP_LEVEL=$(git rev-parse --show-toplevel)
+if ! cd "$TOP_LEVEL" ; then
+    echo "Can't change to the top-level source directory."
+    exit 1
+fi
+
+LUPDATE_INCLUDES=(-I .)
+while read -r ; do
+    LUPDATE_INCLUDES+=(-I "$REPLY")
+done < <(find "$TOP_LEVEL/ui/qt" -type d)
+
 # All .cpp, .h, and .ui files under ui/qt
-LUPDATE_FILES=$(find ui/qt -name '*.cpp' -o -name '*.h' -o -name '*.ui')
+LUPDATE_FILES=()
+while read -r ; do
+    LUPDATE_FILES+=("$REPLY")
+done < <(find ui/qt -name '*.cpp' -o -name '*.h' -o -name '*.ui')
 
 # Add line numbers
 for i in ui/qt/*.ts ; do
-    # shellcheck disable=SC2086
-    lupdate -locations absolute ${LUPDATE_FILES} -ts "$i"
+    lupdate -locations absolute "${LUPDATE_INCLUDES[@]}" "${LUPDATE_FILES[@]}" -ts "$i"
 done
 
 # Get last translation for Transifex
@@ -26,8 +39,7 @@ tx pull -f
 
 # Regenerate last translation for repo
 for i in ui/qt/*.ts ; do
-    # shellcheck disable=SC2086
-    lupdate -locations absolute ${LUPDATE_FILES} -ts "$i"
+    lupdate -locations absolute "${LUPDATE_INCLUDES[@]}" "${LUPDATE_FILES[@]}" -ts "$i"
 done
 
 # Push last change tranlastion on Transifex
@@ -37,8 +49,7 @@ fi
 
 # Remove line numbers
 for i in ui/qt/*.ts ; do
-    # shellcheck disable=SC2086
-    lupdate -locations none -no-ui-lines ${LUPDATE_FILES} -ts "$i"
+    lupdate -locations none -no-ui-lines "${LUPDATE_INCLUDES[@]}" "${LUPDATE_FILES[@]}" -ts "$i"
 done
 
 #Add new commit with last translation update

ui/qt/font_color_preferences_frame.cpp

@@ -25,8 +25,8 @@
 //: These are pangrams. Feel free to replace with nonsense text that spans your alphabet.
 //: https://en.wikipedia.org/wiki/Pangram
 static const char *font_pangrams_[] = {
-    QT_TR_NOOP("Example GIF query packets have jumbo window sizes"),
-    QT_TR_NOOP("Lazy badgers move unique waxy jellyfish packets")
+    QT_TRANSLATE_NOOP("FontColorPreferencesFrame", "Example GIF query packets have jumbo window sizes"),
+    QT_TRANSLATE_NOOP("FontColorPreferencesFrame", "Lazy badgers move unique waxy jellyfish packets")
 };
 const int num_font_pangrams_ = (sizeof font_pangrams_ / sizeof font_pangrams_[0]);
 

ui/qt/lte_mac_statistics_dialog.cpp

@@ -908,7 +908,7 @@ lte_mac_statistics_init(const char *args, void*) {
 
 static stat_tap_ui lte_mac_statistics_ui = {
     REGISTER_STAT_GROUP_TELEPHONY_LTE,
-    QT_TR_NOOP("MAC Statistics"),
+    QT_TRANSLATE_NOOP("LteMacStatisticsDialog", "MAC Statistics"),
     "mac-lte,stat",
     lte_mac_statistics_init,
     0,

ui/qt/lte_rlc_statistics_dialog.cpp

@@ -990,7 +990,7 @@ lte_rlc_statistics_init(const char *args, void*) {
 
 static stat_tap_ui lte_rlc_statistics_ui = {
     REGISTER_STAT_GROUP_TELEPHONY_LTE,
-    QT_TR_NOOP("RLC Statistics"),
+    QT_TRANSLATE_NOOP("LteRlcStatisticsDialog", "RLC Statistics"),
     "rlc-lte,stat",
     lte_rlc_statistics_init,
     0,

ui/qt/models/filter_list_model.h

@@ -19,6 +19,7 @@
 
 class FilterListModel : public QAbstractListModel
 {
+    Q_OBJECT
 
 public:
     enum FilterListType {