Guix,

This patchset updates aws-sdk-cpp and dependencies to the latest version. This fixes some issues in the current patchset and will be much more resilient to future upstream updates.

Patches have mostly been removed, with comments added to the remaining patches.

The patches for failing tests have been replaced with the '-DENABLE_NET_TESTS=OFF' configuration argument (oops! that was an oversight).

The CMAKE_PREFIX_PATH patches have been replaced by a limited but sufficient setting of the configuration argument using '(assoc-ref %build-inputs "aws-c-common")'. I was not able to find a better way to pass Guix's computed CMAKE_PREFIX_PATH environment variable as a package configuration argument.

Greg