Implemented inequation solver for continous functions
	modified:   sympy/solvers/__init__.py
	modified:   sympy/solvers/solvers.py
	modified:   sympy/solvers/tests/test_solvers.py
incorporate isolve into inequalities
Merge pull request #1 from smichr/isolve

incorporate isolve into inequalities
variable name changes and remove comment in test
Merge pull request #2 from smichr/isolve

variable name changes and remove comment in test
fix test and revert collecting intervals
Merge branch 'master' into isolve