[LyX/master] Use qt4-compatible connect() syntax.

[Juergen Spitzmueller]

commit aab58fed6b140e1629d7c4c4f7becbf5b3e74160
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Fri Jan 12 15:41:27 2018 +0100

    Use qt4-compatible connect() syntax.
    
    Signed-off-by: Juergen Spitzmueller <sp...@lyx.org>
---
 src/frontends/qt4/GuiWorkArea.cpp |    6 ++++--
 src/frontends/qt4/GuiWorkArea.h   |    6 +++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/frontends/qt4/GuiWorkArea.cpp 
b/src/frontends/qt4/GuiWorkArea.cpp
index be1b4d4..e82fea7 100644
--- a/src/frontends/qt4/GuiWorkArea.cpp
+++ b/src/frontends/qt4/GuiWorkArea.cpp
@@ -1039,9 +1039,11 @@ CompressorProxy::CompressorProxy(GuiWorkArea * wa) : 
QObject(wa)
 {
        qRegisterMetaType<KeySymbol>("KeySymbol");
        qRegisterMetaType<KeyModifier>("KeyModifier");
-       connect(wa, &GuiWorkArea::compressKeySym, this, &CompressorProxy::slot,
+       connect(wa, SIGNAL(compressKeySym(KeySymbol, KeyModifier, bool)),
+               this, SLOT(slot(KeySymbol, KeyModifier, bool)),
                Qt::QueuedConnection);
-       connect(this, &CompressorProxy::signal, wa, 
&GuiWorkArea::processKeySym);
+       connect(this, SIGNAL(signal(KeySymbol, KeyModifier)),
+               wa, SLOT(processKeySym(KeySymbol, KeyModifier)));
 }
 
 
diff --git a/src/frontends/qt4/GuiWorkArea.h b/src/frontends/qt4/GuiWorkArea.h
index 806aefd..39d2054 100644
--- a/src/frontends/qt4/GuiWorkArea.h
+++ b/src/frontends/qt4/GuiWorkArea.h
@@ -68,9 +68,6 @@ public:
 
        /// return true if the key is part of a shortcut
        bool queryKeySym(KeySymbol const & key, KeyModifier mod) const;
-       /// Process Key pressed event.
-       /// This needs to be public because it is accessed externally by 
GuiView.
-       void processKeySym(KeySymbol const & key, KeyModifier mod);
 
        bool inDialogMode() const;
        void setDialogMode(bool mode);
@@ -86,6 +83,9 @@ public:
        double pixelRatio() const;
 
 public Q_SLOTS:
+       /// Process Key pressed event.
+       /// This needs to be public because it is accessed externally by 
GuiView.
+       void processKeySym(KeySymbol const & key, KeyModifier mod);
        ///
        void stopBlinkingCaret();
        ///