alien.libraries.finder: using find-library for some often missing libs
math.parser: fix docs for >base and base>.
vm: generate a to_fixnum_strict to workaround an odd io.monitors issue.
vm: change some push/pop to replace/peek.
gtk.ffi: fixed.
llvm.core: use find-library.
alien.libraries.finder: Make find-library return the string passed in instead of f if the library is not found. We want vocabularies to load no matter what instead of throwing a missing library error. Also, print dlerror in the error message and take away the redundant line about possible missing libraries. Fixes #986.
opengl.capabilities: Apply @jonenst's suggestions for gl-version failures with mesa opengl.
opengl.capabilities: Try to throw linux Radeon users a bone for getting around having two libGL.so installed.
See http://ubuntuforums.org/showthread.php?t=2228534&p=13044229#post13044229
(Does anyone know the best fix for this!?)