Build - Moved all 3rd party stuff to a subdirectory

Makefile

@@ -3,7 +3,9 @@ OUTDIR = build
 CXXFLAGS += $(shell sdl2-config --cflags) -std=c++14 -Wall -g
 CFLAGS += $(shell sdl2-config --cflags)
 CPPFLAGS += -I. -I$(OUTDIR) \
-	    -Iimgui -Iglm -IIconFontCppHeaders -Iebcl/include \
+	    -I3rdparty/imgui -I3rdparty/glm \
+	    -I3rdparty/icon-font-headers \
+	    -I3rdparty/ebcl/include \
 	    -DREAL_BUILD -DGLM_ENABLE_EXPERIMENTAL
 LIBS += $(shell sdl2-config --libs) -lGL -lGLEW -ldl \
 	$(LIBEBCL) -latomic
@@ -99,7 +101,7 @@ outdir:
 
 #-------------------------------------------------------------------------------
 
-$(IMGUI_OBJS): $(OUTDIR)/%.o: imgui/%.cpp | outdir
+$(IMGUI_OBJS): $(OUTDIR)/%.o: 3rdparty/imgui/%.cpp | outdir
 	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $<
 
 #-------------------------------------------------------------------------------
@@ -126,7 +128,7 @@ $(PARSERCHECK_OBJS): $(OUTDIR)/%.o: %.cc $(PCH) | outdir $(FILEDUMPS)
 #-------------------------------------------------------------------------------
 
 $(LIBEBCL):	ebcl-config
-	+make -C ebcl CONFIG=../ebcl-config
+	+make -C 3rdparty/ebcl CONFIG=../../ebcl-config
 
 $(PCH): externals.hh
 	$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $<
@@ -135,9 +137,9 @@ $(PCH): externals.hh
 
 $(OUTDIR)/window.o: window.cc $(OUTDIR)/font-awesome.inl
 
-$(OUTDIR)/font-awesome.inl: font-awesome/fonts/fontawesome-webfont.ttf $(OUTDIR)/font-to-c
-	$(OUTDIR)/font-to-c -base85 font-awesome/fonts/fontawesome-webfont.ttf \
+$(OUTDIR)/font-awesome.inl: 3rdparty/font-awesome/fonts/fontawesome-webfont.ttf $(OUTDIR)/font-to-c
+	$(OUTDIR)/font-to-c -base85 3rdparty/font-awesome/fonts/fontawesome-webfont.ttf \
 		FontAwesome_ >$@
 
-$(OUTDIR)/font-to-c: imgui/extra_fonts/binary_to_compressed_c.cpp
+$(OUTDIR)/font-to-c: 3rdparty/imgui/extra_fonts/binary_to_compressed_c.cpp
 	$(CXX) -o $@ $<