Bump to 1.0.3, require urdfdom_headers 1.0.3 (ros#121)

* require urdfdom_headers 1.0.3 (strToDouble)

* bump to 1.0.3 to match urdfdom_headers

Merge pull request ros#90 from scpeters/unboost

Unboost: bump version to 1.0 and use c++11

0.4.2 version bump

Merge pull request ros#76 from j-rivero/master

Use cmake variables to set SOVERSION

Merge pull request ros#75 from scpeters/master

urdf_parser: fix dll macro

stripping urdfdom to be a pass through

re-enable SOVERSION

fix install location

add xml_reflection to the install rule