new structural mechanics example
removed adaptivity (Bracket)
fix in resources
test in acoustic harmonic planar field - volume integral value is OK
test in acoustic harmonic axisymmetric field - volume and surface integral values are OK
fixes in acoustic xml module + filled right values to acoustic test
speed improvement of filter with ext_function
Reflect the deletion of cache in Hermes.
Add #include "GL/glew.h" for Qt4 on Win.
Merge with Hermes.
Merge pull request #107 from l-korous/master

Merge with Hermes
use_cache removed