libcap: enable build_pie/relro.

srcpkgs/libcap/template

@@ -1,7 +1,8 @@
 # Template file for 'libcap'
 pkgname=libcap
 version=2.24
-revision=3
+revision=4
+build_pie=yes
 bootstrap=yes
 makedepends="attr-devel"
 short_desc="POSIX.1e capabilities suite"
@@ -17,6 +18,7 @@ fi
 
 do_configure() {
 	sed -i 's/CFLAGS :=/CFLAGS +=/g' Make.Rules
+	sed -i 's/LDFLAGS :=/LDFLAGS +=/g' Make.Rules
 	sed -i '/BUILD_CFLAGS/s/$(CFLAGS)//' Make.Rules
 }
 do_build() {