rewrite scripts

try to provide better syntax and avoid using bash

debian/rules.d/tools/objtool/Makefile

@@ -11,13 +11,18 @@ objtool.real-%:
 # these on the command line to make cross-builds work.  But it also
 # builds fixdep which still needs to be native in a cross-build.  Set
 # REALHOSTCC and REALHOSTLD variables which will be used for fixdep.
-	$(MAKE) -C $(top_srcdir)/tools/objtool O=$(CURDIR)/$* \
-		HOSTARCH=$(KERNEL_ARCH) ARCH=$* \
-		HOSTCC=$(CC) KBUILD_HOSTCFLAGS='$(CFLAGS) $(CPPFLAGS)' \
-		HOSTLD=$(CROSS_COMPILE)ld KBUILD_HOSTLDFLAGS='$(LDFLAGS)' \
-		HOSTAR=$(CROSS_COMPILE)ar \
-		REALHOSTCC=gcc REALHOSTLD=ld \
-		V=1
+	$(MAKE) -C $(top_srcdir)/tools/objtool \
+	    O=$(CURDIR)/$* \
+	    HOSTARCH=$(KERNEL_ARCH) \
+	    ARCH=$* \
+	    HOSTCC=$(CC) \
+	    KBUILD_HOSTCFLAGS='$(CFLAGS) $(CPPFLAGS)' \
+	    HOSTLD=$(CROSS_COMPILE)ld \
+	    KBUILD_HOSTLDFLAGS='$(LDFLAGS)' \
+	    HOSTAR=$(CROSS_COMPILE)ar \
+	    REALHOSTCC=gcc \
+	    REALHOSTLD=ld \
+	    V=1
 	ln -f $*/objtool $@
 
 %: %.o