travis go
regtests
path plumed
test mingw
test mingw
no work
Revert "no work"

This reverts commit fe5fc02d918095350009eba1b86323ab5b46ea97.

Revert "test mingw"

This reverts commit 671282ae413d285d57af6d9d89f194c67c8d007d.

Revert "test mingw"

This reverts commit 2d463f38e5811a92a5fe1dd1b67ab5526670c971.
regtest attempt
path append
Improved travis CI

Travis test implemented base on a branch originally made by @tonigi

Every push on a branch containing this file will trigger a build
on travis CI. Several test configurations are attempted
(with/without MPI) and regtest are run. Also manual is generated.
Install latest doxygen
Copy regtests to doc
Merge branch 'v2.1' into v2.1-travis-ci
Better travis file

Run valgrind tests when [valgrind] appears in git log

Build doc when [makedoc] appears in git log

Use openmp1.5 (standard openmp had a bug making one test fail)

xdrfile is not installed (will be used in 2.2)
Merge branch 'v2.1' into v2.1-travis-ci
Fixed travis file

Check for keywords should take last commit and not
ignore merge commits
Improved travis file

Now uses a precompiled doxygen and latex.
Building of manual is now faster.