apg: Fix build on case insensitive filesystems

pkgs/tools/security/apg/default.nix

@@ -10,7 +10,10 @@ stdenv.mkDerivation rec {
   '';
   makeFlags = stdenv.lib.optionals stdenv.isDarwin ["CC=cc"];
 
-  patches = [ ./apg.patch ];
+  patches = [
+    ./apg.patch
+    ./phony-install-target.patch
+  ];
 
   postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
     sed -i -e 's|APG_CLIBS += -lcrypt|APG_CLIBS += -L${openssl.out}/lib -lcrypto|' Makefile

pkgs/tools/security/apg/phony-install-target.patch

@@ -0,0 +1,11 @@
+diff -ur a/Makefile b/Makefile
+--- a/Makefile	2003-08-08 00:40:39.000000000 +0900
++++ b/Makefile	2018-04-05 22:29:39.284191020 +0900
+@@ -142,6 +142,7 @@
+ 	strip ${CS_PROGNAME}
+ 	strip ${BFM_PROGNAME}
+ 
++.PHONY: install
+ install:
+ 	if test -x ./apg; then \
+ ./mkinstalldirs ${INSTALL_PREFIX}${APG_BIN_DIR}; \