Patch by Dan Liew (with a few changes by me) that improves the Doxygen documentation for Solver/SolverImpl.


git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@181443 91177308-0d34-0410-b5e6-96231b3b80d8
Patch by Dan Liew: "Improve the doxygen comments for ExprSMTLIBPrinter"


git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@181444 91177308-0d34-0410-b5e6-96231b3b80d8
Patch by Dan Liew: "Renamed ExprSMTLIBPrinter method mangleQuery() to negateQueryExpression() to make it clear what it does."


git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@181445 91177308-0d34-0410-b5e6-96231b3b80d8