gcrypt: disable all asm for FreeBSD

It is mostly disabled because of very old build tools, and might work
with clang 3 which is available by default on FreeBSD9

idem for the OSX disabling of aesni

contrib/src/gcrypt/rules.mak

@@ -21,6 +21,10 @@ CONFIGURE_OPTS += --disable-asm
 endif
 ifdef HAVE_MACOSX
 CONFIGURE_OPTS += --disable-aesni-support
+else
+ifdef HAVE_BSD
+CONFIGURE_OPTS += --disable-asm --disable-aesni-support
+endif
 endif
 .gcrypt: libgcrypt
 	#$(RECONF)