workaround problems with LTO for some libraries (disable for them)

Currently enabling lto fails for scfilt frm and wpftdraw which should be
fixed and this commit reverted.

Change-Id: I73b1846458dd7830425279328dd4e652269afc1a

solenv/gbuild/platform/unxgcc.mk

@@ -185,7 +185,7 @@ $(call gb_Helper_abbreviate_dirs,\
 	mkdir -p $(dir $(1)) && \
 	$(gb_CXX) \
 		$(if $(filter Library CppunitTest,$(TARGETTYPE)),$(gb_Library_TARGETTYPEFLAGS)) \
-		$(gb_LTOFLAGS) \
+		$(if $(filter-out $(foreach lib,frm scfilt wpftdraw,$(call gb_Library_get_linktargetname,$(lib))),$*),$(gb_LTOFLAGS)) \
 		$(if $(SOVERSION),-Wl$(COMMA)--soname=$(notdir $(1)).$(SOVERSION)) \
 		$(if $(SOVERSIONSCRIPT),-Wl$(COMMA)--version-script=$(SOVERSIONSCRIPT))\
 		$(subst \d,$$,$(RPATH)) \