[SyncEvolution] Misleading error messages in configure for --enable-kwallet and --enable-akonadi

Hi, when using --enable-kwallet and --enable-akonadi, the checks for the required development files give misleading error messages. --enable-kwallet complains about a missing kwallet.pc. This file doesn't seem to exist somewhere. Instead, the configure script checks for kwallet.h, as can be seen in src/backends/kde/configure-sub.in. --enable-akonadi complains about a missing akonadi.pc. Even if the package that contains this file is installed, it still complains. Instead, the configure script checks for Akonadi/Collection header files, as can be seen in src/backends/akonadi/configure-sub.in. Regards, Tino