fix added library names

sdext/Extension_minimizer.mk

@@ -31,7 +31,9 @@ $(eval $(call gb_Extension_Extension,presentation-minimizer,sdext/source/minimiz
 
 $(eval $(call gb_Extension_set_platform,presentation-minimizer,$(sdext_PLATFORM)))
 
-$(eval $(call gb_Extension_add_file,presentation-minimizer,$(call gb_Library_get_dllname,SunPresentationMinimizer),$(call gb_Library_get_target,SunPresentationMinimizer)))
+$(eval $(call gb_Extension_add_files,presentation-minimizer,,\
+    $(call gb_Library_get_target,SunPresentationMinimizer) \
+))
 
 $(eval $(call gb_Extension_add_files,presentation-minimizer,bitmaps,\
     $(SRCDIR)/icon-themes/galaxy/desktop/res/extension_32.png \

sdext/Extension_pdfimport.mk

@@ -35,7 +35,7 @@ $(eval $(call gb_Extension_add_package_dependencies,pdfimport,\
     sdext_pdfimport_keywords \
 ))
 
-$(eval $(call gb_Extension_add_files,pdfimport,.,\
+$(eval $(call gb_Extension_add_files,pdfimport,,\
     $(call gb_Executable_get_target,xpdfimport) \
     $(call gb_Library_get_target,pdfimport) \
     $(SRCDIR)/sdext/source/pdfimport/config/pdf_import_filter.xcu \

sdext/Extension_presenter.mk

@@ -36,7 +36,7 @@ $(eval $(call gb_Extension_add_package_dependencies,presenter-screen,\
 ))
 
 $(eval $(call gb_Extension_add_files,presenter-screen,,\
-    $(call gb_Library_get_target,presenter-screen) \
+    $(call gb_Library_get_target,PresenterScreen) \
 ))
 
 $(eval $(call gb_Extension_add_files,presenter-screen,bitmaps,\