Fix build with bmake

svn path=/head/; revision=317436

games/mvdsv/files/patch-Makefile.BSD

@@ -0,0 +1,20 @@
+--- ./Makefile.BSD.orig	2009-09-24 22:16:17.000000000 +0200
++++ ./Makefile.BSD	2013-05-05 23:13:58.797891197 +0200
+@@ -97,7 +97,7 @@
+ 		${SV_DIR}/pcre/get.o \
+ 		${SV_DIR}/pcre/pcre.o
+ 
+-.if ${USE_ASM} == ${ASM}
++.if defined(ASM) && ${USE_ASM} == ${ASM}
+ SV_ASM_OBJS = \
+ 		${SV_DIR}/bothtoolsa.o \
+ 		${SV_DIR}/math.o
+@@ -119,7 +119,7 @@
+ 		${QWDTOOLS_DIR}/sync.o \
+ 		${QWDTOOLS_DIR}/tools.o
+ 
+-.if ${USE_ASM} == ${ASM}
++.if defined(ASM) && ${USE_ASM} == ${ASM}
+ QWDTOOLS_ASM_OBJS = \
+ 		${SV_DIR}/bothtoolsa.o
+ .endif