Convert to new override syntax

This is the result of automated script conversion:

scripts/contrib/convert-overrides.py <oe-core directory>

converting the metadata to use ":" as the override character instead of "_".

(From OE-Core rev: 42344347be29f0997cc2f7636d9603b1fe1875ae)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/help2man/help2man_1.48.3.bb

@@ -16,7 +16,7 @@ EXTRA_AUTORECONF += "--exclude=aclocal"
 
 EXTRA_OECONF = "--disable-nls"
 
-do_install_append () {
+do_install:append () {
 	# Make sure we use /usr/bin/env perl
 	sed -i -e "1s:#!.*:#! /usr/bin/env perl:" ${D}${bindir}/help2man
 }