Don't close file in readVspAirfoil.

The call site for this function expects the file to remain open -- it takes
care of closing it itself.  The double-close presented no problem on
Windows and MacOS, but caused Linux to crash.
Rewrite BuildTargetMap to speed it up.

This is a major rewrite of BuildTargetMap to speed it up by using
the implied structure of the surfaces as much as possible.  Some
of this results in approximate source limiting, but everything should
be good enough for practical use.
Make rigorous growth limiting optional

Add file and GUI options to control rigorous 3D mesh growth limiting.  This limiting
step is computationally expensive, but may be required for certain applications and
for certain geometries.

Geometries with facing (but nonintersecting) surfaces such as nacelles or high-lift
systems present this situation.

Applications which will need to grow a volume mesh in those facing gaps will need the
mesh to be limited across the gap.  Other applications may not have this requirement.
Fix MS_Wing chord update on scale.

The previous code assumed that the tip chord of one segment would update
the root chord of the next segment in order to maintain consistency.  This
assumption proved to be false.  Rather than trigger matchWingSects which
depends on the current active section, this fix simply sets both the
root and tip chords.

Bug reported by Bill Fredericks.
Fixed compilation warning messages on gcc 4.5
Fixed some compilation warning messages with Clang.
Fixed compilation warning messages with INTEL compiler.
Finished removing compiler warnings.
Merge branch 'BTM_Rewrite' into Fixes2.2.1
Change line endings from DOS to Unix on example files.

The example files had mixed DOS/Unix line endings.  VSP doesn't care, but
making them consistent will make them easier to maintain.
Update example files to latest VSP file format.

The example files had become far out of date as new pieces of information
were added to the VSP file format.  On load, VSP would throw a warning for
missing information and fill in a suitable default.  This causes a large
number of messages to display to the console -- which is unnerving to new
users.

This change was performed by simply opening the old files and saving them
with a current version of VSP.
Bump version to 2.2.2

Version 2.2.2 has been a long time coming.  I have been waiting on a few
features to make a 2.3.0 release, but finally decided it was better to get
these fixes out sooner than later.

The mesh growth limiting step of CFDMesh 'Build Target Mesh' has been
totally re-written.  This new version should be _vastly_ faster for just
about anyone out there.  The new BTM algorithm follows the surface
topology rather than doing a full spatial search.  For the rare cases
where a full spatial search is still required, there is an optional flag
to enable it.  Even that mode should still be much faster than before.

Bug fixes in this release:
 - Don't close already closed file in readVspAirfoil (Linux crash)
 - Fix MS_Wing chord update on scale
 - Fix warnings on various compilers
 - Update example files to silence warnings on load