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init: improbe boot param parsing

We need to support things like acpi_osi="!Windows 2006"

--- a/initramfs-init.in

+++ b/initramfs-init.in

@@ -98,18 +98,22 @@

 # gotta start from somewhere :)

 echo "Alpine Init $VERSION"

-# read the kernel options

-for i in `cat /proc/cmdline` ; do

-	case $i in

+# read the kernel options. We use eval set so we can handle things like

+# acpi_osi="!Windows 2006"

+eval set -- `cat /proc/cmdline`

+

+while [ $# -gt 0 ]; do

+	case "$1" in

 		s|single|1)

 			SINGLEMODE=yes ;;

 		modules=*)

-			MODULES="`echo ${i#modules=} | tr ',' ' '`";;

+			MODULES="`echo ${1#modules=} | tr ',' ' '`";;

 		noautodetect)

 			AUTODETECT=no;;

-		*=*)    eval KOPT_$i ;;

-		*)      eval KOPT_$i=yes ;;

+		*=*)    eval "KOPT_${1%%=*}='${1#*=}'" ;;

+		*)      eval "KOPT_$(echo $1 | sed 's: :_:g')=yes" ;;

 	esac

+	shift

 done

 # start bootcharting if wanted