stubby: update to version 0.3.0

Signed-off-by: Jonathan G. Underwood <jonathan.underwood@gmail.com>

net/stubby/patches/stubby-0.3.0-fix-config-install.patch

@@ -0,0 +1,35 @@
+--- a/CMakeLists.txt	2020-07-01 22:17:14.424445933 +0100
++++ b/CMakeLists.txt	2020-07-01 22:17:57.032637638 +0100
+@@ -115,14 +115,26 @@
+ 
+ # Ensure the file gets CRLF line endings on Windows.
+ file(GENERATE OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/stubby.yml INPUT ${CMAKE_CURRENT_SOURCE_DIR}/stubby.yml.example)
+-# Copy to destination iff no destination file exists.
++
++# Copy stubby.yml to destination iff no destination file exists.
++# This is complicated by (a) not being able to use generators, due to
++# CMake minimum version requirement, and (b) to account for DESTDIR.
++# And in the latter case, if we're adding DESTDIR to the start of the
++# path, we must on Windows remove any initial drive letter. That's what
++# INSTALL appears to do.
+ install(CODE "\
+-  set(targetdir ${STUBBYCONFDIR})\n\
+-  if (\$ENV{DESTDIR})\n\
+-    set(targetdir \$ENV{DESTDIR}/\${targetdir})\n\
++  set(targetdir \"${STUBBYCONFDIR}\")\n\
++  set(destdir \"\$ENV{DESTDIR}\")\n\
++  if (destdir)\n\
++    string(REGEX REPLACE \"^([A-Z]:)?/(.*)\" \"\\\\2\" newtarget \"\${targetdir}\")\n\
++    if (newtarget)\n\
++      set(targetdir \"\${newtarget}\")\n\
++    endif ()\n\
++    set(targetdir \"\${destdir}/\${newtarget}\")\n\
+   endif ()\n\
+-  if (NOT EXISTS \${targetdir}/stubby.yml)\n\
+-    file(COPY ${CMAKE_CURRENT_BINARY_DIR}/stubby.yml DESTINATION \${targetdir})\n\
++  if (NOT EXISTS \"\${targetdir}/stubby.yml\")\n\
++    file(COPY \"${CMAKE_CURRENT_BINARY_DIR}/stubby.yml\" DESTINATION \"\${targetdir}\")\n\
++    message(\"-- Installing: \${targetdir}/stubby.yml\")\n\
+   endif ()")
+ 
+ if (APPLE)