Check that METAD + TARGET + GRID_SPARSE works correctly.

Solves a bug with METAD + TARGET + GRID_SPARSE
See also #467

I verified it, I will then modified a regtest so to keep checking for this

(backported from v2.5)

no actual change

See #435

[makedoc]

(cherry picked from commit 781e5677)

Can be found with the following python snippet

import re
plumedDictionary={}
with open("/opt/local/lib/plumed/vim/syntax/plumed.vim") as fin:
    for line in fin:
        if re.match("^let b:plumedDictionary\[.*$",line):
            line=re.sub("^let b:","",line)
            exec(line,{'__builtins__': None},{'plumedDictionary':plumedDictionary})
for key in plumedDictionary.keys():
    diction={}
    for opt in plumedDictionary[key]:
        if(opt['word'] in diction):
            print(key,opt['word'])
        diction[opt['word']]=1

Plumedbot pull request

This commit contains changes automatically generated by plumedbot on Travis-ci.