Merged last changes from trunk..

git-svn-id: https://roadrunnerlib.googlecode.com/svn/branches/develop@1260 c0027639-9190-0b57-01eb-f09a03790dae
updated ModelData for sparse stoichiometry storage, update rrCompiler flags for older gcc
ran Linux 64 tests

git-svn-id: https://roadrunnerlib.googlecode.com/svn/branches/develop@1261 c0027639-9190-0b57-01eb-f09a03790dae
Merge branch 'gdevelop' of github.com:AndySomogyi/roadrunner into gdevelop

git-svn-id: https://roadrunnerlib.googlecode.com/svn/branches/develop@1262 c0027639-9190-0b57-01eb-f09a03790dae
ran 64 bit Linux tests

git-svn-id: https://roadrunnerlib.googlecode.com/svn/branches/develop@1263 c0027639-9190-0b57-01eb-f09a03790dae
updated ModelData for sparse stoichiometry storage, update rrCompiler flags for older gcc

git-svn-id: https://roadrunnerlib.googlecode.com/svn/branches/feature-llvm@1264 c0027639-9190-0b57-01eb-f09a03790dae
Merge branch 'gdevelop' into gfeature-llvm

git-svn-id: https://roadrunnerlib.googlecode.com/svn/branches/feature-llvm@1265 c0027639-9190-0b57-01eb-f09a03790dae