Remove ChangeLog files. Superceded by git history logs.
Make sure to install the Lang melting-point descriptor.
Added a charge function
Merge branch 'master' of github.com:openbabel/openbabel
Make sure to remove the generated openbabel-ruby.txt temporary file.
Work around bugs in Clang/LLVM libc++ which ships with Mac 10.9.
Make sure to check for OBUnitCell before dereferencing.

Bug found via Clang static analysis checker.
Improvements to proposed pybel charge method
Small fix
Improved error messages of calccharges
Fix garbage plugin strings bug with libc++

With libc++, using OBDefine to load descriptors from plugindefines.txt would result in some plugin IDs and descriptions becoming garbage.

This was because plugins use const char* pointers for their ID and description, which point towards strings stored in a vector by OBDefine. The problem was that as new strings were read from plugindefines.txt and added to the vector, reallocations can occur to expand the vector capacity, invalidating any existing const char* created from the previously added strings using c_str().

This commit fixes this bug by reading in all descriptors from plugindefines.txt before creating the plugin instances. This ensures no changes are made the string vector once a plugin instance has been created.
Merge pull request #61 from patrickfuller/pybel-charge

Added a charge function
Merge pull request #62 from mcs07/garbage

Fix garbage plugin strings bug with libc++
Remove unused pointer value

Fixes defect reported by Coverity Scan. The value of pdef is no longer required here now that plugin instances are made later.
Merge pull request #63 from mcs07/master

Remove unused pointer value