EGL: do not use sparse files for shader

- Process is killed by system with SIGBUS signal if it writes
  data to mapped sparse file on full filesystem.
- Allocate space using write() function instead of ftruncate()
  to avoid creation of sparse files on full filesystem.
  Catch write() errors to handle out-of-space case during allocation.

Bug: http://code.google.com/p/android/issues/detail?id=35376


Change-Id: Ifc366454f34e71a43a0973eda4f591a920ea3a14
Signed-off-by: Kirill Artamonov <kartamonov@nvidia.com>