compel: mv noexecstack from CFLAGS to LDFLAGS

In a manner similar to one of commit 9303ed3 ("Makefiles: move
-Wa,--noexecstack out of CFLAGS"), let's move this option to
linker flags (see the abovementioned commit for reasoning).

travis-ci: success for series starting with [1/3] compel: mv noexecstack from CFLAGS to LDFLAGS
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

compel/src/main.c

@@ -16,14 +16,14 @@
 #include "piegen.h"
 
 #define CFLAGS_DEFAULT_SET					\
-	"-Wstrict-prototypes -Wa,--noexecstack "		\
+	"-Wstrict-prototypes "					\
 	"-fno-stack-protector -nostdlib -fomit-frame-pointer "
 
 #define COMPEL_CFLAGS_PIE	CFLAGS_DEFAULT_SET "-fpie -fno-jump-tables"
 #define COMPEL_CFLAGS_PIE_JPT	CFLAGS_DEFAULT_SET "-fpie"
 #define COMPEL_CFLAGS_NOPIC	CFLAGS_DEFAULT_SET "-fno-pic -fno-jump-tables"
 
-#define COMPEL_LDFLAGS_DEFAULT "-r"
+#define COMPEL_LDFLAGS_DEFAULT "-r -z noexecstack"
 
 piegen_opt_t opts = {
 	.input_filename		= NULL,