Fixed install

Do not install the full user-doc source (it is much bigger now
with latex directory)

src/lib/Makefile

@@ -92,7 +92,7 @@ install-do:
 # rebuild libraries and main using new target dir
 	$(MAKE) PLUMED_LIBDIR=$(PLUMED_INSTALL_ROOT)/src/lib/ PLUMED_INSTALL=Install all
 # copy .h, .cpp .o compile_options.sh and documentation:
-	cd ../../ ; tar cf - patches scripts src/*/*.h src/*/*.cpp src/*/*.o src/config/compile_options.sh *-doc | tar xf - -C $(PLUMED_INSTALL_ROOT)/
+	cd ../../ ; tar cf - patches scripts src/*/*.h src/*/*.cpp src/*/*.o src/config/compile_options.sh *-doc/*.png *-doc/html *-doc/manual.pdf | tar xf - -C $(PLUMED_INSTALL_ROOT)/
 # also copy .h files into include/ dir
 	cd ../../src ; tar cf - */*.h */*/*.h | tar xf - -C $(PLUMED_INSTALL_PREFIX)/include/plumed$(PLUMED_INSTALL_LIBSUFFIX)/
 # copy inc files changing the path