Concerning #995: A.nz[i] for nonzero accesing in python, A{i} in octave

A[i] does not work in Python anymore, only if A is a dense column vector
Correction concerning simulator output transpose
tools.structure make more use of vertsplit
Added missing html.sty (not part of TexLive) #1016
Updated user guide title #1016
Updated user guide intro
Updated installation instructions #1016
Updated text on symbolic framework #1016
Updated integration chapter in user guide #1016
Resolved unused variable warning #618
Resolved unused variable warning (2) #618
Commended out dead code in ConstantMX #618
Commented out unused variables in C runtime #618
Resolved overloaded-virtual warning, #618
Resolved unused-variable warnings #618
Attempt to fix trunk (1)
Revert "Attempt to fix trunk (1)"

This reverts commit 5885a187e9537e82e769d4826d8d4f208ae74655.
Fixed broken Modelica example
Concerning #100: implementing fast dependsOn for SX and MX
Reviving the SWIG_SPLIT feature