Allow avoiding rpath-link. In addition, it will make
absolute sonames on linux possible (later commit).

removed sentence about NOSPLINE

https://groups.google.com/d/msgid/plumed-users/4bdade66-5dde-4748-b3c2-3c6155906b69%40googlegroups.com?utm_medium=email&utm_source=footer

Fix #195

added syntax highlight in an example

Small fix: do not push manual when building from a pull request

all -> allatoms
physical -> mdatoms
virtual removed

See https://github.com/plumed/plumed2/pull/372

see ce9a8ea0

cc: @gtribello I think you messed up by mistake the Doxyfile

This will report an error instead of just crashing when an
incorrect symbols is used

@ hydrogens
@ nonhydrogens

See #195

See #195

@ water
@ ions

See #195

@ nucleic (DNA or RNA)
@ protein (protein)

See #195

@ all (all atoms)
@ physical (all physical atoms)
@ virtual (all virtual atoms)

see #195