fix "warning: ISO C90 forbids mixed declarations and code"

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
udhcp: add PXELINUX config file option (code 209) definition

This change adds a definition for DHCP option 209. RFC 5071 defines code
209 as a configuration file for a PXE bootloader; this change uses
the string "pxeconffile" as its text identifier.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
fstrim: use new-style config/kbuild/applet snippets; trim help text

function                                             old     new   delta
packed_usage                                       29546   29520     -26

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
awk: optionally support -e AWK_PROG

function                                             old     new   delta
awk_main                                             959     978     +19

Signed-off-by: Sven-Göran Bergh <sgb@systemasis.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>