2007-10-15 Marcus Brinkmann <marcus@g10code.de>

(client_t::call_assuan): Call uiserver_connect.

• registry.c: Include assert.h. Check return value of malloc.
• exechelp.h, exechelp.c: New files.
• Makefile.am (gpgex_SOURCES): Add exechelp.h and exechelp.c.
• main.h (REGKEY): Move to ...
• registry.h (REGKEY): ... here.
• main.cc (_gpgme_debug): Put into extern C.
• main.h: Move debug stuff into ...
• debug.h: ... this new file.
• client.cc (default_uiserver_name, uiserver_connect): New functions.