Fswatch

* Issue 60: Allow excluding file patterns by passing in a file.

* Issue 119: Merge fswatch and libfswatch Autotools project into one.

* Issue 141: Add Docker files for Linux distributions used for testing.

* Add target to build fswatch on Alpine Linux and Debian.

* Only libfswatch has been updated.

* Issue 118: v. 1.9.0 breaks the -1 option.

* Only libfswatch has been updated.

* Issue 84: Add the possibility of scheduling a periodic event.

* Issue 114: fswatch does not track newly created directories recursively when
using the inotify monitor.

* The AX_CXX_COMPILE_STDCXX macro was patched so that the switches it adds to
the compiler are added to the preprocessor configuration as well.

* Unsupported CMake files and CLion project files are included as a courtesy.