By the use of a the new lib/checksrc.pl script that checks that our basic source style rules are followed.
When configured with '--without-ssl --with-nss', NTLM authentication now uses NSS crypto library for MD5 and DES. For MD4 we have a local implementation in that case. More details are available at https://bugzilla.redhat.com/603783 In order to get it working, curl_global_init() must be called with CURL_GLOBAL_SSL or CURL_GLOBAL_ALL. That's necessary because NSS needs to be initialized globally and we do so only when the NSS library is actually required by protocol. The mentioned call of curl_global_init() is responsible for creating of the initialization mutex. There was also slightly changed the NSS initialization scenario, in particular, loading of the NSS PEM module. It used to be loaded always right after the NSS library was initialized. Now the library is initialized as soon as any SSL or NTLM is required, while the PEM module is prevented from being loaded until the SSL is actually required.