Change the 'a'rchive command in the thread view to only archive open
messages.
-Portability
------------
-Fix configure script to test each compiler warning we want to use.
-
Completion
----------
Fix bash completion to complete multiple search options (both --first
Makefile should print message teaching user about LD_LIBRARY_PATH (or
similar) if libdir is not set to a directory examined by ldconfig.
-
-Fix notmuch build system to work with gold, (apt-get
-binutils-gold). Need the notmuch binary to explicitly link againsts
-libraries it depends on, (rather than just getting them via
-libnotmuch).