* APR_DECLARE_STATIC and APU_DECLARE_STATIC gets already defined in APR.cmake
* Move both _CRT_SECURE_NO_WARNINGS and _WINSOCK_DEPRECATED_NO_WARNINGS definitions to 00-Common.cmake
* Always define WIN32_LEAN_AND_MEAN and include subset of Windows API by default
* Remove llwin32headerslean.h and remove unnecessary WIN32_LEAN_AND_MEAN definition handling in llwin32headers.h
* Clean up includes of Windows API headers
* Get rid of workaround to link against IPHLPAPI.lib in lluuid.cpp - this seems to have been an issue in the past that has been fixed
This allows the io.cpp test to listen only on the localhost loopback, avoiding
the macOS 10.13.6 "allow listening for incoming connections" popup while
running build-time tests that might halt an unattended TeamCity build.
cleaning up build
moved most includes of windows.h to llwin32headers.h to disable min/max macros, etc
streamlined Time class and consolidated functionality in BlockTimer class
llfasttimer is no longer included via llstring.h, so had to add it manually in several places
* Reordered HTTP proxy choices in settings dialog
* Now using setBlocking and setNonBlocking LLSocket methods during TCP handshakes.
* Made those LLSocket methods available outside the class.