remove patches and add build-id

* remove all patches from downstream and add new proxy one based on
  downstream
* add LDFLAGS to include build-id so building works fine
* add missing golang prelink

Signed-off-by: Toshaan Bharvani <toshaan@powerel.org>

SPECS/golang.spec

@@ -77,16 +77,9 @@ License:        BSD and Public Domain
 URL:            http://golang.org/
 Source0:        https://storage.googleapis.com/golang/go%{go_version}.src.tar.gz
 Source1:        powerel.go
-Patch1:         0001-Don-t-use-the-bundled-tzdata-at-runtime-except-for-t.patch
-Patch2:         0002-syscall-expose-IfInfomsg.X__ifi_pad-on-s390x.patch
-Patch3:         0003-cmd-go-disable-Google-s-proxy-and-sumdb.patch
-Patch215:       go1.5-zoneinfo_testing_only.patch
-Patch221:       fix_TestScript_list_std.patch
-Patch1952381:   rhbz1952381.patch
-Patch222:       remove_waitgroup_misuse_tests.patch
-Patch223:       remove_ed25519vectors_test.patch
 Source100:      golang-gdbinit
 Source101:      golang-prelink.conf
+Patch1:         disable-google-proxy-and-sumdb.patch
 
 %if !%{golang_bootstrap}
 BuildRequires:  gcc-go >= 5
@@ -217,11 +210,6 @@ Requires:       %{name} = %{version}-%{release}
 
 %prep
 %autosetup -p1 -n go
-%patch215 -p1
-%patch221 -p1
-%patch1952381 -p1
-%patch222 -p1
-%patch223 -p1
 cp %{SOURCE1} ./src/runtime/
 
 
@@ -246,8 +234,11 @@ export CC="gcc"
 export CC_FOR_TARGET="gcc"
 export GOOS=linux
 export GOARCH=%{gohostarch}
+DEFAULT_GO_LD_FLAGS=""
 %if !%{external_linker}
 export GO_LDFLAGS="-linkmode internal"
+%else
+export GO_LDFLAGS="\"-extldflags=-Wl,-z,now,-z,relro\" $DEFAULT_GO_LD_FLAGS"
 %endif
 %if !%{cgo_enabled}
 export CGO_ENABLED=0
@@ -410,6 +401,7 @@ fi
 %dir %{gopath}/src/golang.org
 %dir %{gopath}/src/golang.org/x
 %{_sysconfdir}/gdbinit.d
+%{_sysconfdir}/prelink.conf.d/golang.conf
 
 
 %files src -f go-src.list