Android configuration change -- additional Make rules

當變更 product configuration時，make 會有：

*** Build configuration changed: "imx51_bbg-eng-{en_US,fr_FR,it_IT,es_ES,de_DE,nl_NL,cs_CZ,pl_PL,ja_JP,zh_TW,zh_CN,ru_RU,ko_KR,nb_NO,
es_US,da_DK,el_GR,tr_TR,pt_PT,pt_BR,rm_CH,sv_SE,bg_BG,ca_ES,en_GB,fi_FI,hr_HR,hu_HU,
in_ID,iw_IL,lt_LT,lv_LV,ro_RO,sk_SK,sl_SI,sr_RS,uk_UA,vi_VN,tl_PH,hdpi,mdpi,nodpi}" -> "imx51_bbg-eng-{zh_TW,zh_CN,en_US,hdpi,nodpi}"
*** Forcing "make installclean"...
*** rm -rf 
out/target/product/imx51_bbg/data/*
out/target/product/imx51_bbg/data-qemu/* 
out/target/product/imx51_bbg/userdata-qemu.img
out/host/linux-x86/obj/NOTICE_FILES 
out/host/linux-x86/sdk 
out/target/product/imx51_bbg/*.img 
out/target/product/imx51_bbg/*.txt 
out/target/product/imx51_bbg/*.xlb 
out/target/product/imx51_bbg/*.zip 
out/target/product/imx51_bbg/data 
out/target/product/imx51_bbg/obj/APPS 
out/target/product/imx51_bbg/obj/NOTICE_FILES out/target/product/imx51_bbg/obj/PACKAGING 
out/target/product/imx51_bbg/recovery 
out/target/product/imx51_bbg/root 
out/target/product/imx51_bbg/system 
out/target/product/imx51_bbg/dex_bootjars out/target/product/imx51_bbg/obj/JAVA_LIBRARIES
*** Done with the cleaning, now starting the real build.

好像 out/target/product/imx51_bbg 下的都刪掉了呀.