Redirect emcmake calls to emconfigure.
Split clang options passed to clang, to be more concise and less messy. Start splitting C and C++ options.
Add option valid-abspath to add absolute path, which should be considered valid.
Add test for warning about abspath and selectively disabling it.
fix mkdir on a path ending in a slash; fixes #2263 and #2258
- fix mouse button ordering
- added/fixed some glfw button codes
- added myself to AUTHORS
- unified the comments and else statements
Merge pull request #2270 from prixeus/incoming

GLFW: fix mouse button ordering and added/fixed some glfw button codes
add missing test file for #2263 / #2258
Add valid_abspath option to emcc --help.
Apply requested formatting changes.
Merge pull request #2232 from abergmeier/empkg_prerequisites

Empkg prerequisites
fix other.test_implicit_func
Merge pull request #1464 from abergmeier/emcmake

Introduced wrapper emcmake