Remove deprecated reseet_jacobian in NonlinearVariationsSolver. Fixes Isssue #212.
Avoid "if multi_index" when "... is not None" is intended, the former triggers bool conversion of the multiindex.
Fix Issue #118.

Remove Restriction code from dofmap, etc. Was not working with dofmap construction. Functionality will be available when mesh views are in place.
Fix typos in documentation for nonlinear Poisson demo
Merge branch 'garth/fix-issue-118'
Small fix for Intel compiler warning.

Extra helper for finding Boost.
Some minor import fixes.
Merge branch 'martinal/fix-minor-bug'
Merge branch 'garth/fix-for-intel-compiler'
Merge branch 'martinal/topic-ufl-core-redesign'
Add workaround to GCC 4.6 failure on initializer lists.

https://bugs.launchpad.net/ubuntu/+source/gcc-4.6/+bug/1352356
Add detection of GCC version on old CMake by Johannes.
Work out ghost node ownership properly
Remove some debugging output
Restore condition for periodic BCs
Merge branch 'master' into chris/dofmapbuilder