modules: add OnAddNetwork, OnDeleteNetwork hooks.
whitespace fix
Update outdated info.

gcc 3 is outdated.
saslauth is now called cyrusauth.
Add freenode network.
VS upgrade
Adjust toolset target to XP in ZNC_Modules
a random change to the identserver module.
Merge pull request #423 from KindOne-/patch-1

Update outdated README info.
Merge commit 'refs/pull/422/head' of github.com:znc/znc
Fix error message for invalid network name
Remove test .o files on make clean
Merge remote-tracking branch 'upstream/master' into msvc