IIS: Changes Curl version and removes OpenSSL dependency

As the this new Curl version supports well the Windows certificate storage,
removing the dependency on the OpenSSL. Also changing the build scripts to work
accordingly. As the cmake build of Curl is said to broken abandoning it in
favor of the nmake files. Thanks to Gregg Smith and Steffen.

apache2/Makefile.win

@@ -11,7 +11,7 @@ LIBS = $(APACHE)\lib\libhttpd.lib \
        $(APACHE)\lib\libapr-1.lib \
        $(APACHE)\lib\libaprutil-1.lib \
        $(PCRE)\pcre.lib \
-       $(CURL)\lib\libcurl_imp.lib \
+       $(CURL)\libcurl.lib \
        $(LIBXML2)\win32\bin.msvc\libxml2.lib \
        Ws2_32.lib \
        "iphlpapi.lib"
@@ -32,6 +32,9 @@ INCLUDES = -I. -I.. \
            -I$(PCRE)\include -I$(PCRE) \
            -I$(LIBXML2)\include \
            -I$(APACHE)\include
+
+# Enables support for SecRemoteRules and external resources.
+DEFS=$(DEFS) -DWITH_CURL -DWITH_REMOTE_RULES
 
 # Lua is optional
 !IF "$(LUA)" != ""