arm-none-eabi-newlib: Untar gcc-arm-embedded.tar.bz2 quietly

Also remove {gcc,newlib} folders before re-extracting and add
!emptydirs option.

mingw-w64-arm-none-eabi-newlib/PKGBUILD

@@ -14,7 +14,7 @@ license=('Various')
 groups=("${MINGW_PACKAGE_PREFIX}-${_target}-toolchain")
 depends=("${MINGW_PACKAGE_PREFIX}-${_target}-binutils")
 makedepends=("${MINGW_PACKAGE_PREFIX}-gcc")
-options=('staticlibs' '!strip')
+options=('staticlibs' '!strip' '!emptydirs')
 source=('gcc-arm-embedded.tar.bz2::https://launchpad.net/gcc-arm-embedded/4.8/4.8-2014-q3-update/+download/gcc-arm-none-eabi-4_8-2014q3-20140805-src.tar.bz2'
         '10-newlib-arm-dynamic-reent.patch'
         '20-newlib-libgloss-configure-fix.patch'
@@ -29,14 +29,16 @@ prepare() {
   # Extract packages from archive
   rm -rf ${srcdir}/tmp
   mkdir ${srcdir}/tmp && cd ${srcdir}/tmp
-  tar  xvf ../../gcc-arm-embedded.tar.bz2 --strip-components=2
+  tar xf ../../gcc-arm-embedded.tar.bz2 --strip-components=2
 
   # Copy and extract GCC and Newlib packages
   cp gcc.tar.bz2 ${srcdir}
   cp newlib.tar.bz2 ${srcdir}
   cd ${srcdir}
-  tar xvf gcc.tar.bz2
-  tar xvf newlib.tar.bz2
+  [ -d gcc ] && rm -rf gcc
+  [ -d newlib ] && rm -rf newlib
+  tar xf gcc.tar.bz2
+  tar xf newlib.tar.bz2
 
   # Newlib
   cd ${srcdir}/${_realname}