perl: Bump build revision to force rebuild

This rebuild will be against a patched pwd.h so that perl does not
try to link in 'endpwent', which has been removed in Android N.

Fixes #212.

packages/perl/build.sh

@@ -4,6 +4,7 @@ TERMUX_PKG_DESCRIPTION="Capable, feature-rich programming language"
 # cpan modules will require make:
 TERMUX_PKG_DEPENDS="make"
 TERMUX_PKG_VERSION=5.22.1
+TERMUX_PKG_BUILD_REVISION=1
 TERMUX_PKG_SRCURL=http://www.cpan.org/src/5.0/perl-${TERMUX_PKG_VERSION}.tar.gz
 # Does not work with parallell builds:
 TERMUX_MAKE_PROCESSES=1