staging: usbip: userspace: configure.ac: major overhaul

All parameters have been quoted; and autoscan was rerun so new
headers, types, and functions were added. The deprecated macros
AM_CONFIG_HEADER and AM_PROG_LIBTOOL were changed to
AC_CONFIG_HEADERS and LT_INIT, respectively. The AS_HELP_STRING
macro is used to avoid arbitrary spacing for proper help menu
alignment, and AS_CASE to avoid quoting issues. And finally, the
macros were realigned to allow mere mortals the ability to read them.

Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>