provide a proper patch for the static linking problem of package curl

src/curl-1-fix-static.patch

@@ -0,0 +1,19 @@
+This file is part of mingw-cross-env.
+See doc/index.html for further information.
+
+This patch has been taken from:
+http://sourceforge.net/tracker/?func=detail&aid=3016471&group_id=976&atid=100976
+
+diff -r f9016ca5bace include/curl/curlbuild.h.in
+--- a/include/curl/curlbuild.h.in	Tue Jun 15 13:55:53 2010 +0200
++++ b/include/curl/curlbuild.h.in	Tue Jun 15 14:00:13 2010 +0200
+@@ -111,6 +111,9 @@
+ /*  EXTERNAL INTERFACE SETTINGS FOR CONFIGURE CAPABLE SYSTEMS ONLY  */
+ /* ================================================================ */
+ 
++/* Configure process defines this to 1 when static linking is requested. */
++#undef CURL_STATICLIB
++
+ /* Configure process defines this to 1 when it finds out that system  */
+ /* header file ws2tcpip.h must be included by the external interface. */
+ #undef CURL_PULL_WS2TCPIP_H

src/curl.mk

@@ -19,7 +19,6 @@ define $(PKG)_UPDATE
 endef
 
 define $(PKG)_BUILD
-    $(SED) -i '/^#endif/ i#define CURL_STATICLIB' '$(1)/include/curl/curlbuild.h.in'
     # wine confuses the cross-compiling detection, so set it explicitly
     $(SED) -i 's,cross_compiling=no,cross_compiling=yes,' '$(1)/configure'
     cd '$(1)' && ./configure \