dev-lang/ghc: do not persist '-no-pie' in ghc wrapper, bug #609624

This fixes build failure of shared libraries on gcc-6.3.0
Reported-by: Helmut Jarausch
Bug: https://bugs.gentoo.org/609624

Package-Manager: Portage-2.3.3, Repoman-2.3.1

dev-lang/ghc/ghc-7.10.3.ebuild

@@ -251,7 +251,7 @@ ghc_setup_cflags() {
 		# gcc-6.3 has support for -no-pie upstream, but spelling differs from
 		# gentoo-specific '-nopie'. We enable it in non-bootstrap to allow
 		# hardened users try '-pie' in USE=ghcbootstrap mode.
-		append-ghc-cflags persistent compile link -no-pie
+		append-ghc-cflags compile link -no-pie
 	fi
 	gcc-specs-ssp && append-ghc-cflags persistent compile      -fno-stack-protector
 

dev-lang/ghc/ghc-8.0.2.ebuild

@@ -243,7 +243,7 @@ ghc_setup_cflags() {
 		# gcc-6.3 has support for -no-pie upstream, but spelling differs from
 		# gentoo-specific '-nopie'. We enable it in non-bootstrap to allow
 		# hardened users try '-pie' in USE=ghcbootstrap mode.
-		append-ghc-cflags persistent compile link -no-pie
+		append-ghc-cflags compile link -no-pie
 	fi
 
 	# prevent from failind building unregisterised ghc: