added ebuilds for:

- dev-vcs/gitlab-shell-3.0.0
- dev-vcs/gitlab-workhorse-0.7.4

updated ebuild for:
- www-apps/gitlab-ce-9999

dev-vcs/gitlab-workhorse/files/fix-Makefile-0.7.4.patch

@@ -0,0 +1,12 @@
+diff --git a/Makefile b/Makefile
+index 9b3146d..b3c0630 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,5 +1,5 @@
+-PREFIX=/usr/local
+-VERSION=$(shell git describe)-$(shell date -u +%Y%m%d.%H%M%S)
++PREFIX=${DESTDIR}/usr
++VERSION=v0.7.4-$(shell date -u +%Y%m%d.%H%M%S)
+ export GOPATH=$(shell pwd)/_build
+ GOBUILD=go build -ldflags "-X main.Version=${VERSION}"
+ PKG=gitlab.com/gitlab-org/gitlab-workhorse