- Do not use werror and simplify cflags handling

- setting Source with URL
- changing to %cmake macro and cleanup

- bump to 1.5.0
Changes:
1.5.0
=====
Bug #4060 - Key stuck down on Windows server
Bug #4061 - Windows server repeats modifier keys
1.4.18
======
Bug #3980 - Shell extension DLL causes explorer.exe to crash
Task #4049 - Correct code style in OSXKeyState compilation unit
Task #4050 - Fix subversion issue tracker URL
Task #4053 - Improve deb package quality
Task #4054 - Improve rpm package quality
1.4.17
======
Bug #2836 - Unable to begin screen name or alias with numbers
Bug #3796 - Some files being unintentionally dragged (including explorer.exe)
Bug #3886 - Alias is allowed to match screen name
Bug #3919 - RPM install fails on Fedora 20, failed dependencies: libcurl
Bug #3921 - Error: synwinxt.dll outdated (upgrading from 1.4.15 to 1.4.16)
Bug #3927 - Mavericks accessibility exception not working (when upgrading from
1.4.15 to 1.4.16)
Bug #3933 - Plus signs in the email address cause premium login to fail
Bug #3939 - Compile fails on ARM (Raspberry Pi) because of cryptopp/Crypto++
lib