[dev-libs/Ice] added a patch for db6 from pld, also include php 7.1 fix from upstream so i don't forget it later in case we have no 3.6.4 soon-ish

dev-libs/Ice/Ice-3.6.9999.ebuild

@@ -20,6 +20,9 @@ EGIT_REPO_URI="https://github.com/zeroc-ice/ice.git"
 EGIT_CHECKOUT_DIR="${WORKDIR}/${PN}"
 EGIT_BRANCH="3.6"
 
+# This variable does not belong to any eclass. It is solely used in this ebuild
+BERKDB_SLOTS=( 6.2 6.1 5.3 5.1 4.8 )
+
 inherit db-use mono-env php-ext-source-r3 python-r1 ruby-ng toolchain-funcs versionator git-r3
 
 # for mono-env
@@ -61,6 +64,7 @@ PHP_EXT_S="${S}/php"
 
 PATCHES=(
 	"${FILESDIR}/${PN}-3.6.3-no-arch-opts.patch"
+	"${FILESDIR}/${PN}-3.6.3-db6.patch"
 	"${FILESDIR}/${PN}-3.6.4-csharp.patch"
 )