Add PIE and RELRO to binaries

imap/pop3-login: Use libsasl for authenticating to remote IMAP/POP3 server. Also passdb lookup can return "proxy_mech" extra field to specify which SASL mechanism to use.

Makefile: imap/pop3-login now links SSL_LIBS explicitly. This fixes compiling in some systems where they didn't get included automatically (or the automatic linking used wrong libraries).

imap-login: If imap_capability is set, use it. --HG-- branch : HEAD

Makefiles: Separated LIBDOVECOT and LIBDOVECOT_DEPS. --HG-- branch : HEAD

Initial commit for v2.0 master rewrite. Several features are still missing. --HG-- branch : HEAD

Some binaries were missing list of library dependencies. --HG-- branch : HEAD

Added configure --without-shared-libs to link built binaries against static libraries. The libraries are still built and installed, so this is mainly useful for making life easier for developers. --HG-- branch : HEAD

Build libdovecot.so and libdovecot-storage.so. Based on patch by Stephan Bosch. --HG-- branch : HEAD

Initial commit for config rewrite. --HG-- branch : HEAD

Upgrades to autoconf 2.5 and automake >1.4. --HG-- branch : HEAD

Added IMAP and POP3 proxying support. --HG-- branch : HEAD

Moved client side code for auth process handling to lib-auth. Some other login process cleanups. --HG-- branch : HEAD

Missing headers --HG-- branch : HEAD

Moved common login process code to login-common, created pop3-login. --HG-- branch : HEAD