There is no round() in Windows
Merge pull request #1223 from zerkella/1.3.0

Fix of the two Windows slashes
Merge pull request #1224 from sjinks/round

[BUG] There is no round() function on Windows
Fixed C89 incompatibilities, which prevented compiling Phalcon in Windows.
Also regenerated build files, thus now Phalcon can be compiled in Windows.