Fix to make debug builds correctly link against qscintilla on Mac/Windows

qscintilla2.prf

@@ -0,0 +1,12 @@
+greaterThan(QT_MAJOR_VERSION, 4) {
+    QT += widgets printsupport
+
+    greaterThan(QT_MINOR_VERSION, 1) {
+        macx:QT += macextras
+    }
+}
+
+INCLUDEPATH += $$[QT_INSTALL_HEADERS]
+
+LIBS += -L$$[QT_INSTALL_LIBS]
+LIBS += -lqscintilla2

scintilla.pri

@@ -2,5 +2,9 @@ scintilla {
   HEADERS += src/scintillaeditor.h
   SOURCES += src/scintillaeditor.cpp
   DEFINES += USE_SCINTILLA_EDITOR
-  CONFIG += qscintilla2
+
+  # The qscintilla2.prf which ships with QScintilla is broken for Mac/Windows 
+  # debug builds, so we supply our own
+  win32|macx: include(qscintilla2.prf)
+  else: CONFIG += qscintilla2
 }