[PATCH] LTO parallelism

Hello,
   following patch increases parallelism for LTO. I tried to add 
-flto=+jobserver, but didn't help.

Tested on trunk for x86_64 GNU/Linux.

Thank you,
Martin

diff --git a/solenv/gbuild/platform/com_GCC_defs.mk b/solenv/gbuild/platform/com_GCC_defs.mk
index a4b18a3..93d3fe7 100644
--- a/solenv/gbuild/platform/com_GCC_defs.mk
+++ b/solenv/gbuild/platform/com_GCC_defs.mk
@@ -98,7 +98,7 @@ ifeq ($(ENABLE_LTO),TRUE)
 ifeq ($(COM_GCC_IS_CLANG),TRUE)
 gb_LTOFLAGS := -flto
 else
-gb_LTOFLAGS := -flto=${PARALLELISM} -fuse-linker-plugin -O2
+gb_LTOFLAGS := -flto -fuse-linker-plugin -O2
 endif
 endif