miniupnpc: Update to 2.1.20190408

Switched to CMake. This allows getting rid of several patches and hacks.

Added PKG_LICENSE information

Rearranged some stuff for consistency between packages.

Added some linked flags for smaller size. Saves around 500 bytes on MIPS.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

net/miniupnpc/patches/300-add-listdevices-to-cmake.patch

@@ -0,0 +1,21 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -66,6 +66,7 @@ set (MINIUPNPC_SOURCES
+   connecthostport.c
+   portlistingparse.c
+   receivedata.c
++  listdevices.c
+   connecthostport.h
+   igd_desc_parse.h
+   minisoap.h
+@@ -142,6 +143,10 @@ if (UPNPC_BUILD_SHARED)
+     add_executable (upnpc-shared upnpc.c)
+     target_link_libraries (upnpc-shared PRIVATE libminiupnpc-shared)
+     target_include_directories(upnpc-shared PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
++
++    add_executable (listdevices listdevices.c)
++    target_link_libraries (listdevices PRIVATE libminiupnpc-shared)
++    target_include_directories(listdevices PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+   endif ()
+ endif ()
+