rewrite scripts

try to provide better syntax and avoid using bash

debian/rules.d/tools/usb/usbip/Makefile

@@ -5,20 +5,22 @@ srcdir := $(top_srcdir)/tools/usb/usbip
 # sub-make command line.
 unexport MAKEFLAGS
 
-all: export CFLAGS := $(shell dpkg-buildflags --get CFLAGS)
-all: export CPPFLAGS := $(shell dpkg-buildflags --get CPPFLAGS) \
-	-isystem $(top_srcdir)/debian/build/build-tools/include
+CPPFLAGS_COMMON := -Wno-error=address-of-packed-member
+
+all: export CFLAGS := $(shell dpkg-buildflags --get CFLAGS) $(CPPFLAGS_COMMON)
+all: export CPPFLAGS := $(shell dpkg-buildflags --get CPPFLAGS) $(CPPFLAGS_COMMON) \
+  -isystem $(top_srcdir)/debian/build/build-tools/include
 all: export LDFLAGS := $(shell dpkg-buildflags --get LDFLAGS)
 all:
 	rsync -a $(srcdir)/ .
 	./autogen.sh
 	./configure \
-		--prefix=/usr \
-		--with-tcp-wrappers \
-		--with-usbids-dir=/usr/share/misc \
-		--disable-shared \
-		--disable-static \
-		--host=$(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
+	  --prefix=/usr \
+	  --with-tcp-wrappers \
+	  --with-usbids-dir=/usr/share/misc \
+	  --disable-shared \
+	  --disable-static \
+	  --host=$(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
 	$(MAKE) V=1
 
 install: