PVS Studio small fix

Fix V815 Decreased performance. Consider replacing the expression 'peer_address = ""' with 'peer_address.clear()'. stream_engine.cpp 99

Fix V815 Decreased performance. Consider replacing the expression 'options.socks_proxy_address != ""' with '!options.socks_proxy_address.empty()'. session_base.cpp 497

Fix V803 Decreased performance. In case 'it' is iterator it's more effective to use prefix form of increment.
    Replace iterator++ with ++iterator. stream_engine.cpp
    http://www.viva64.com/en/d/0165/print/

Remove build and runtime dependencies on uuid and uuid-devel.

Fix up spec build

Signed-off-by: Dan Mick <dmick@redhat.com>

Signed-off-by: Dan Mick <dmick@redhat.com>

Signed-off-by: Dan Mick <dmick@redhat.com>

Signed-off-by: Dan Mick <dmick@redhat.com>

Signed-off-by: Dan Mick <dmick@localhost.localdomain>

Signed-off-by: Dan Mick <dmick@redhat.com>

Signed-off-by: Dan Mick <dmick@redhat.com>

Problem : Build failed with MinGW on windows

Update NuGet package.

Problem: curve messages can be replayed

Solution: ensure message short nonces are strictly increasing and validate them

Problem: stream_engine.cpp security can be downgraded

Solution: accept only the mechanism defined by the socket options.

I've not tested this yet, so it's a speculative fix.

Problem: test_security_curve does't try wrong mechanisms

Solution: check that it rejects attempts to connect to a CURVE server
using NULL or PLAIN client.

Fix hang terminating PGM ZMQ_SUB (#822).

Fix non-constant-expression narrowing

For OS X, the microseconds field is implemented as an int type. The implicit narrowing in the initializer list throws a compiler error for some compilers with C++11 support turned on. The specific error message is: "error: non-constant-expression cannot be narrowed from type 'long' to '__darwin_suseconds_t' (aka 'int') in initializer list [-Wc++11-narrowing]".

Tested on Clang 5.1.0 and Mac OS X 10.9.4.

Stop session's timer when pipe terminates

Update nuget package.

Code cleanup

Problem: undocumented limit on IPC paths in Linux is 107 chars

Solution: document the limit of 113 chars including ipc://. We might
fix this in libzmq by shortening an over-long IPC pathname into a
unique string; so long as this is done consistently in bind and in
connect, it will save applications from weird failures when they
use external data to generate IPC pathnames.

Fix configure warning.