session CHANGE new timeout introduced

Also described with other options in README.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index de1b049..e9d4293 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,7 +36,9 @@
 option(ENABLE_SSH "Enable NETCONF over SSH support (via libssh)" ON)
 option(ENABLE_TLS "Enable NETCONF over TLS support (via OpenSSL)" ON)
 option(ENABLE_DNSSEC "Enable support for SSHFP retrieval using DNSSEC for SSH (requires OpenSSL and libval)" OFF)
-set(READ_TIMEOUT 30 CACHE STRING "Maximum number of seconds waiting for some expected data")
+set(READ_INACTIVE_TIMEOUT 20 CACHE STRING "Maximum number of seconds waiting for new data once some data have arrived")
+set(READ_ACTIVE_TIMEOUT 300 CACHE STRING "Maximum number of seconds for receiving a full message")
+set(MAX_PSPOLL_THREAD_COUNT 6 CACHE STRING "Maximum number of threads that could simultaneously access a ps_poll structure")
 
 if(ENABLE_DNSSEC AND NOT ENABLE_SSH)
     message(WARNING "DNSSEC SSHFP retrieval cannot be used without SSH support.")