Reland Bug 468701, pass MOZ_DEBUG_SYMBOLS onto NSS on all platforms (not just win32), r=ted.mielczarek

security/manager/Makefile.in

@@ -161,6 +161,9 @@ ifeq (WINNT_1,$(OS_TARGET)_$(MOZ_MEMORY))
 export DLLFLAGS
 endif
 
+# To get debug symbols from NSS
+export MOZ_DEBUG_SYMBOLS
+
 ifdef .PYMAKE
 NSSMAKE = $(GMAKE)
 else
@@ -208,7 +211,6 @@ ifndef MOZ_NO_DEBUG_RTL
 DEFAULT_GMAKE_FLAGS += USE_DEBUG_RTL=1
 endif
 endif
-export MOZ_DEBUG_SYMBOLS
 endif # WINNT
 ifeq ($(OS_ARCH),OS2)
 ifdef MOZ_OS2_HIGH_MEMORY