Bring back quesoGLC to Warzone.

This renders the text much faster than what Qt offers, and also fixes issues with Vsync being ON, on windows.

patch fixes by Safety0ff

closes ticket:2824

This patch basically reverts:
828c0f7
Revert 9e29aa5 which reverted the removal of QuesoGLC, to start
    working on fixing the font rendering with Qt.

NOTE: On some systems, there is a assertion failure with FcFini().
We could fix the issue by doing a embed of quesoGLC in our repo, or hope the fontconfig
guys fix the issue upstream.
See ticket:2824 for more discussion on this issue.

Author: vexed

configure.ac

@@ -410,6 +410,9 @@ AC_CHECK_LIB(GLU, main,
 		[${OPENGL_LIBS} -lm]), [${OPENGL_LIBS} -lm])
 AC_SUBST([OPENGL_LIBS], [${OPENGL_LIBS}])
 
+# Look for OpenGLC
+PKG_CHECK_MODULES([OPENGLC], [quesoglc >= 0.7.2])
+
 # When (cross-)compiling for Windows (MinGW) we need to link in BFD for the Dr.
 # MinGW derived exception handler.
 if test "x$host_os_mingw32" = "xyes" ; then

lib/framework/wzapp.cpp

@@ -1079,6 +1079,9 @@ int wzSemaphoreAvailable(WZ_SEMAPHORE *semaphore)
 /***     Font support   ***/
 /**************************/
 
+// Font and text drawing support based on Qt postponed until we can get it working properly on
+// all platforms, and with decent speed, and without clobbering existing OpenGL states.
+#if 0
 void iV_SetFont(enum iV_fonts FontID)
 {
 	WzMainWindow::instance()->setFontType(FontID);
@@ -1159,6 +1162,13 @@ void iV_DrawTextRotated(const char* string, float XPos, float YPos, float rotati
 	pie_SetRendMode(REND_OPAQUE);		// beat state machinery into submission
 }
 
+
+void iV_SetTextSize(float size)
+{
+	WzMainWindow::instance()->setFontSize(size);
+}
+#endif
+
 void wzFatalDialog(const char *text)
 {
 	crashing = true;

lib/ivis_opengl/Makefile.am

@@ -1,4 +1,4 @@
-AM_CPPFLAGS = $(PNG_CFLAGS) $(OPENGL_CFLAGS) $(WZ_CPPFLAGS) $(GLEW_CFLAGS) $(QT4_CFLAGS)
+AM_CPPFLAGS = $(PNG_CFLAGS) $(OPENGL_CFLAGS) $(OPENGLC_CFLAGS) $(WZ_CPPFLAGS) $(GLEW_CFLAGS) $(QT4_CFLAGS)
 AM_CFLAGS = $(WZ_CFLAGS) -Wno-missing-declarations
 AM_CXXFLAGS = $(WZ_CXXFLAGS) $(QT4_CFLAGS)