treewide: Make explicit that 'dev' output of pcre is used

pkgs/development/libraries/slang/default.nix

···
     sed -i -e "s|/bin/ln|ln|" src/Makefile.in
     sed -i -e "s|-ltermcap|-lncurses|" ./configure
   '';
-  configureFlags = "--with-png=${libpng.dev} --with-z=${zlib} --with-pcre=${pcre} --with-readline=${readline}";
+  configureFlags = "--with-png=${libpng.dev} --with-z=${zlib} --with-pcre=${pcre.dev} --with-readline=${readline}";
   buildInputs = [ pcre libpng zlib readline ];
   propagatedBuildInputs = [ ncurses ];
 

pkgs/servers/http/apache-httpd/2.2.nix

···
   '';
   configureFlags = ''
     --with-z=${zlib}
-    --with-pcre=${pcre}
+    --with-pcre=${pcre.dev}
     --enable-mods-shared=all
     --enable-authn-alias
     ${if proxySupport then "--enable-proxy" else ""}

pkgs/servers/http/apache-httpd/2.4.nix

···
     --with-apr=${apr.dev}
     --with-apr-util=${aprutil.dev}
     --with-z=${zlib}
-    --with-pcre=${pcre}
+    --with-pcre=${pcre.dev}
     --disable-maintainer-mode
     --disable-debugger-mode
     --enable-mods-shared=all

pkgs/tools/security/clamav/default.nix

···
     "--with-openssl=${openssl.dev}"
     "--with-libncurses-prefix=${ncurses.dev}"
     "--with-libcurl=${curl.dev}"
-    "--with-pcre=${pcre}"
+    "--with-pcre=${pcre.dev}"
     "--enable-milter"
     "--disable-clamav"
   ];

pkgs/tools/security/modsecurity/default.nix

···
     "--enable-static"
     "--with-curl=${curl.dev}"
     "--with-apxs=${apacheHttpd.dev}/bin/apxs"
-    "--with-pcre=${pcre}"
+    "--with-pcre=${pcre.dev}"
     "--with-apr=${apr.dev}"
     "--with-apu=${aprutil.dev}/bin/apu-1-config"
     "--with-libxml=${libxml2}"

pkgs/top-level/lua-packages.nix

···
     buildPhase = let
       luaVariable = "LUA_PATH=${luastdlib}/share/lua/${lua.luaversion}/?.lua";
 
-      pcreVariable = "PCRE_DIR=${pcre}";
+      pcreVariable = "PCRE_DIR=${pcre.dev}";
       onigVariable = "ONIG_DIR=${oniguruma}";
       gnuVariable = "GNU_INCDIR=${gnulib}/lib";
       treVariable = "TRE_DIR=${tre}";