Fix convergence failure exception message

The message was a leftover from the ImpesTPFA solver and should
reflect the actual location.

Noticed by: qilicun (Liu Ming)
Fixes: Issue #50
Merge pull request #51 from bska/fix-exception-message

Fix convergence failure exception message
add debian packaging
loosen tolerance a bit to avoid failing tests on certain archs (i386, precise)
Merge pull request #53 from akva2/loosen_tolerance

loosen tolerance a bit to avoid failing tests on certain archs
Add new AutoDiffBlock::constant() overload without block sizes.

This should simplify some uses of the autodiff code. The internals
have been changed to allow for objects to have an empty vector of
Jacobians, always treating that object as a constant.
Fix minor whitespace issue.
Fix bug in operator+ introduced by previous commit.

Also make documentation clearer.
Avoid infinite loop with two constant operands.
Reduce version to 0.9.

Since there is a fair chance of interface adjustments after the release,
the version number cautions the user a little bit more than calling it 1.0.
Merge pull request #54 from atgeirr/allow-empty-jac

Add new AutoDiffBlock::constant() overload without block sizes.
add redhat packaging
make packaging compatible with EL5
Specify dir. layout and stylesheets in common templates

These options should be common to all OPM modules to get the same look
for the generated documentation.
Only add option for shared libraries once

The way the test was done previously, it was added for *every* option
after `--enable-shared`, not only that one.
Allow to search for multiple libraries in package

Some packages are split up in several library files, where each of them
doesn't have their own CMake find-module. So we cannot put this list in
the prerequisites. Unlike the headers, where we just add the directory,
all the libraries must be explicitly named on the link line. Thus, we
should allow to specify more than one name in the lib parameter.

The first name specified is designated as the "primary" library and is
assigned to the _LIBRARY variable; the others occur in _LIBRARIES as if
they were prerequisites.

Note that the build system cannot replicate this setup itself; it always
assumes that we are building (at most) one library from the source
files.
Added CMake find modules opm-parser and cjson
Added opm-parser-prereqs.cmake
Updated modules for Findcjson and Findopm-parser
Updated modules to find Opm-parser