freetz_mklibs:
 * fix mklibs doesn't work if FREETZ_PACKAGE_PYTHON is selected. mklibs was trying to use python for TARGET from TARGET_TOOLCHAIN_STAGING_DIR, fix it by adding the path containing python-for-host to the PATH variable
 * reduce scope of some variables
 * minor whitespace/comment adjustments


git-svn-id: file:///var/svn/freetz/trunk@11470 149334a1-2f27-0410-a3b9-fc62619ac1e6